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Agents of pollination - class-IX

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The pollination by ........ is called as zoophily.

  1. Wind

  2. Water

  3. Animals

  4. None of the above


Correct Option: C
Explanation:
Pollination carried by the animals is known as zoophily. The coloured corolla attracts insects for pollination. It has sticky pollens which attach to the insect and are transferred from the anther to the stigma of the flower. For example, Arctium.
Pollination carried by the wind is known as anemophily. It has lighter pollens or winged pollens which are easily carried by the wind. For example, pine.
Pollination carried by water is hydrophilly. It has lighter pollen which is easily carried by the water currents. For example, hydrilla.

In Chiropterophily, pollination is performed by

  1. Bats

  2. Birds

  3. Squirrels

  4. Insects


Correct Option: A
Explanation:
Pollination which occurs by means of bats is called Chiropterophily.
Pollination which occurs by means of wind is called Anemophily.
Pollination which occurs by means of insects is called Entomophily.
Pollination may also occur by various other pollinating agents such as squirrels but any specific term is not given for such type of pollination.
So, the correct answer is A.

Pollination performed by bats is

  1. Myrmecophily

  2. Entomophily

  3. Ornithophily

  4. Chiropterophily


Correct Option: D
Explanation:
Myrmecophily is the pollination of flowers by means of ants.
Entomophily is the pollination of flowers by means of insects.
Ornithophily is the pollination of flowers by means of birds.
Chiropterophily is the pollination of flowers by means of bats.
So, the correct answer is D.

Read the following matches.

(i) Wild pea Petiolar tendril
(ii) Sweet pea Leaflet tendril
(iii) Gloriosa  superba  Stipular tendril
(iv) Australian Acacia Phyllodes

Which of these are correct?

  1. (ii) and (iii)

  2. (i) and (iv)

  3. (ii), (iii) and (iv)

  4. (ii) and (iv)


Correct Option: A
Explanation:
 Sweetpea (Lathyrus odoratus) Leaflet tendril 
 Australian Acacia  Phyllodes

Gloriosa Superba comes under the category leaf tip tendril rather stipular tendril. Wild pea is not a petiole tendril. Correct matches are :

 
So the correct option is "ii&iv".

Which of the following is ornithophilous?

  1. Erythrina

  2. Agave

  3. Grevillea

  4. All the above


Correct Option: D
Explanation:
Ornithophilous plants are the plants in which flowers are pollinated by means of birds. Examples of Ornithophilous plants are Erythrina, Agave, and Grevillea. As all the options given in the question are of Ornithophilous plants.
So, the correct answer is D.

In most of the angiosperms, pollination predominantly occurs by .............

  1. Air

  2. Water

  3. Insects

  4. Birds


Correct Option: C
Explanation:

Pollination is the process of transfer of pollen grain from the anther to stigma. Angiosperm is the flower producing plant that attracts insects for pollination. Insect pollination not only conserves energy for the plant, but insects may play a part in angiosperm diversity. The zoophilous pollen species have adaptations for pollination by generalist insects (39%), specialized pollen-collecting insects (27%) and other specialized pollinators (10%).

Pollination by snail and slug is known as

  1. Ornithophilous

  2. Chiropterophilous

  3. Entomophilous

  4. Malacophilous


Correct Option: D
Explanation:

There are different types of pollination depending upon the agent involved in it. Pollination by bird is known as ornithophilous pollination. Chiropterophilous is a type of pollination in which pollination occurs by bats. Entomophilous is a type of pollination in which pollination occurs by insects. Pollination by snail and slug is known as malacophilous pollination. 

Thus, the correct answer is option D.

Famous ornithologist of India is

  1. Dr. Salim Ali

  2. Gulam Ali

  3. Mohan Ali

  4. None of the above


Correct Option: A
Explanation:
Dr Salim Ali,  "Birdman of India", was the first Indian to conduct systematic bird surveys across India and wrote several bird books that popularized ornithology in India. His best known works are The Book of Indian Birds, Pictorial Guide to the Birds of the Indian Subcontinent and Handbook of the Birds of India and Pakistan (8 volumes), co-authored by Salim Ali and S. Dillon Ripley.
So, the correct option is 'A'.


Chirtopteriphily is pollination by ..................

  1. Insects

  2. Wind

  3. Bats

  4. Snails


Correct Option: C
Explanation:

Chiropterophily is pollination of plants by bats. Bat pollination of most common in tropical and desert areas that have many night blooming flowers. Just like bees and birds that pollinate, nectar consuming bats have evolved ways to find and harvest the nectar. Nectar bats have long tongues and can hover like hummingbirds. In turn, the flowers attract bats with their light-coloured petals, large bolossoms, fruity aromas and plentiful nectar.

Which of the following is a characteristics for ornithophily?

  1. Scented flowers

  2. Bright red coloured flowers and inflorescence

  3. White coloured funnel shaped large corolla

  4. Yellow flower with nectaries at the base of the corolla tube


Correct Option: D
Explanation:
Ornithophily is pollination by birds, characteristic is presence of colored flowers ( mostly red) with nectaries. The orientation of the stigma and anthers is to facilitate pollen transfer for cross pollination. 
So, the correct answer is 'Yellow flower with nectaries at the base of the corolla tube'

The sausage tree (Kigelia pinnate) is pollinated by 

  1. Bat

  2. Air

  3. Wind

  4. Water


Correct Option: A
Explanation:

Kigelia pinnate is a species belonging to the family Bignoniaceae. It is found in tropical Africa. This is an evergreen tree with pinnate leaves and long drooping inflorescence. It produces bell-shaped flowers in panicles and has a strong scent which is most notable at night. The strong smell attracts the bat which comes for pollen and nectar and thus these are generally pollinated by bats. 

Which of the following terms describes pollination by the agency of ants?

  1. Cheiropterophily

  2. Entomophily

  3. Ornithophily

  4. Myrmecophily


Correct Option: D
Explanation:

Pollination is the transferring of pollen grains from the male anther of a flower to the female stigma. Pollination by the agency of ants is called myrmecophily. Pollination by bats, insects and birds are called cleiropterophily, entomophily and ornithophily respectively. 

Some seeds are dispersed by animals ,especially spiny seeds with hooks which get attached to the bodies of animals and are carried to  distant places. Examples is/are -

  1. Xanthium and urena

  2. Xanthium

  3. urena

  4. Cocount


Correct Option: A
Explanation:

The seeds of the fruits get dispersed by different methods. Xanthium and Urena are the plants in which the fruits produces seeds having structures like spines or hooks. These structures are used for clinging the seeds on the body of the animals and get carried away with them and get dispersed.

Thus, the correct answer is option A. 

The chief pollinators of our agri-horticultural crops are

  1. Moths

  2. Beetles

  3. Butterflies

  4. Bees


Correct Option: D
Explanation:

Bees are the most effective pollinators which spent most of their lifetime in collecting pollen to feed their offsprings. At least 30%of 1,500 crop plant species depend on pollination by bees.

So the correct option is 'Bees.'

Select incorrectly matched pair from the follwoing.

  1. Wind - Cannabis - Anemophily

  2. Water - Zoostera - Hydrophily

  3. Insects - Salvia - Entomophily

  4. Birds - Adansonia - Ornithophily

  5. Bats - Kigelia - Chiropterophily


Correct Option: D
Explanation:

Adansonia is a genus of nine species of tree, including six native to Madagascar, two native to mainland Africa and the Arabian peninsula, and one native to Australia. They undergo pollination with the help of bats. It is thus, classified under chiropterophily mode of pollination.

Ornithophily refers to the pollination by which of the following?

  1. Insects

  2. Birds

  3. Snails

  4. Air


Correct Option: B
Explanation:

Ornithophily is a type of pollination that takes place in flowering plant by birds. The birds with long beaks like hummingbird show this type of pollination. The plants, which undergo ornithophily are usually bright coloured and unscented.

Pollination by bats is called as

  1. Chiropterophily

  2. Ornithophily

  3. Malacophily

  4. Entomophily


Correct Option: A
Explanation:

Pollination is the transfer of pollens from the male anther to the female stigma. It is carried out by the help of animals, birds, insects, water and wind. Pollination carried out by bats is called chiropterophily. The pollination carried out by the birds is called ornithophily. The pollination carried out by snails is called malacophily. The pollination carried out by insects is called entomophily.

Pollination by snail and slug is called as .............. pollination.

  1. Entomophilous

  2. Malacophilous

  3. Ornithophilous

  4. Chiropterophilous


Correct Option: B
Explanation:

Pollination by agency of insects is known as entomophily or insect pollination. Bees, butterflies, moths and beetles are main pollinating insects. Insect pollinated flowers are large, conspicuous, bright coloured and have pleasant smell. They have nectarines on receptacles or on spurs at the base of flower whorls and produce nectar to attract insects. Option A is incorrect. Pollination by agency of birds is known as ornithophily. The common pollinating birds are squirrels, bats, snails etc. the bird pollinated flowers are colourful, mostly red, produce lots of nectar and also exhibit adaptations to protect nectar from insects. Option C is incorrect. Pollination by bats is known as chiropterophily. The plants produce large, bell shaped and attractive flowers that open at night and produce strong odours and nectar. Option D is incorrect. Pollination by snails and slug is called as malacophily. These flowers have long blooming period to facilitate access of pollen to snails. 

Thus, the correct answer is option B.

By tissue culture, indefinite number of plants from a small amount of parental tissue can be obtained. This technique is of great economic importance as ____________________________.

  1. New species can be generated

  2. Through somaclonal variation, a large number of variants can be isolated

  3. It is a useful method to multiply genetically uniform population of elite species

  4. Homozygous diploids can be obtained


Correct Option: C
Explanation:

Tissue culture technology is grounded on the fact that the entire plant can be regenerated from explants. This capacity to produce a whole plant from any cell/explant is named totipotency. Individually these plants will be genetically identical to the original plant. Several important food plants like tomato, apple, banana, etc., can be generated on the commercial scale by this method.

Thus, the correct option is C.

Assertion : Chasmogamous flowers require pollinating agents.

Reason : Cleistogamous flowers do not expore their sex organs.

  1. Both assertion and reason are true and reason is a correct explanation of the assertion.

  2. Both assertion and reason are true but reason is not a correct explanation of the assertion.

  3. Assertion is true but Reason is false

  4. Both Assertion and Reason are false

  5. Assertion is false but Reason is true


Correct Option: B
Explanation:

The majority of angiosperms bear chasmogamous flowers, which means the flowers expose their mature anthers and stigma to the pollinating agents. There is another group of plants which set seeds without exposing their sex organs. Such flowers are called cleistogamous and the phenomenon cleistogamy.

Night blooming flowers attract pollinating insects with the help of

  1. Aroma

  2. Nectar

  3. Edible pollen

  4. All of the above.


Correct Option: A
Explanation:
In night, colour of flowers are not detected by insects, so night blooming flowers are generally scented for attracting insects for pollination. Therefore, pollinators are attracted to their aroma.
So, the correct answer is A.

Pollination by ants is

  1. Malacophily

  2. Myrmecophily

  3. Entomophily

  4. Ornithophily


Correct Option: B
Explanation:
Malacophily is the pollination of flowers by means of snails and slugs.
Myrmecophily is the pollination of flowers by means of ants.
Entomophily is the pollination of flowers by means of insects.
Ornithophily is the pollination of flowers by means of birds.
So, the correct answer is B.

Malacophily is pollination by

  1. Insects

  2. Birds

  3. Bats

  4. Snails and slugs


Correct Option: D
Explanation:
Pollination which occurs by means of insects is known as Entomophily.
Pollination which occurs by means of birds is known as Ornithophily.
Pollination which occurs by means of bats is known as Chiropterophily.
Pollination which occurs by means of snails and slugs is known as Malacophily.
So, the correct answer is D.

Adansonia (Baobab Tree) is

  1. Malacophilous

  2. Ornithophilous

  3. Chiropterophilous

  4. Anemophilous


Correct Option: C
Explanation:
In Malacophilous plants, flowers are pollinated by snails and slugs. Example, some water plants such as Lemna and members of Poaceae.
In Ornithophilous plants, flowers are pollinated by means of birds. Example, Begonia is pollinated by the hummingbird.
In Chiropterophilous plants, flowers are pollinated by bats. Example, Adansonia (baobab tree).
In Anemophilous plants, flowers are pollinated by wind. Example, Maize, grasses etc.
So, the correct answer is C.

Hovering birds pollinate

  1. Bignonia

  2. Peepal

  3. Magnolia

  4. Bougainvillea


Correct Option: A
Explanation:
Hovering birds are the hummingbirds that are the most common flower-visiting birds and are attracted to bright colored flowers that produce nectar. These birds have a long beak and they do not sit on the flower, they hover over it. The flowers of such plants hang (are pendent) so that birds can hover over it and insert the beak in the flower. This type of pollination by means of birds is called ornithophily. The example is which is pollinated by hummingbirds, i.e. Bignonia.
So, the correct answer is A.

Ornithophily is pollination by

  1. Humans

  2. Wind

  3. Birds

  4. Bat


Correct Option: C
Explanation:
Pollination by humans can occur mechanically only .
Pollination which occurs by means of wind is called Anemophily.
Pollination which occurs by means of birds is called Ornithophily.
Pollination which occurs by means of bats is called Cheiropterophily.
So, the correct answer is C.

A plant pollinated by bats is

  1. Ophrys

  2. Salvia

  3. Kigellia

  4. All of the above


Correct Option: C
Explanation:
Pollination of flowers which occurs by means of bats is called Chiropterophily. Example of plant pollinated by a bat is Kigelia (also known as sausage tree) which is pollinated by the bat MicropterusSalvia has a turnpipe mechanism of pollination and is pollinated by beeOphrys is pollinated by a moth Colpa aurea (hairy wasp) and they both possess a relationship of pseudocopulation.
So, the correct answer is C.

Bees are important to agriculture as they.

  1. Produce wax

  2. Perform pollination

  3. Prevent pollination

  4. Produce honey


Correct Option: B
Animal vectors are required for pollination in
  1. Mulberry

  2. Cucumber

  3. Maize

  4. Vallisneria


Correct Option: B
Explanation:
• Mulberry is pollinated by wind.
• Cucumber is pollinated by bees.
• Maize is pollinated by wind.
Vallisneria is pollinated by water.
Hence, animal vector is required for the pollination of Cucumber. So, the correct answer is B.

Crows helps in the pollination of

  1. Agave

  2. Bombax

  3. Erythrina

  4. Bignonia


Correct Option: A
Explanation:
Eight species of birds were observed in contact with open flowers on focal
agaves; of these, rufous hummingbirds were most common. Two additional species, Zenaida asiatica (white-winged dove) and Corvus sp. (one of three species of ravens and crows potentially present in the study area), were observed at open flowers on non-focal plants.
So the correct option is 'Agave'.

Large stout, nocturnal flowers producing copiously, nectar and emitting fermenting fruity odour, are the adaptations for.

  1. Entomophily

  2. Ornithophily

  3. Chiropterophily

  4. Anemophily


Correct Option: C

Match the columns.

Colum I Column II
(a) Zoophily $1$. Pollination by birds
(b) Ornithophily $2$. Pollination by insects
(c) Entomophily $3$. Pollination by bats
(d) Chiropterophily $4$. Pollination by animals
  1. a-$3$, b-$2$, c-$1$, d-$4$

  2. a-$1$, b-$2$, c-$3$, d-$4$

  3. a-$4$, b-$1$, c-$2$, d-$3$

  4. a-$4$, b-$2$, c-$1$, d-$3$

  5. a-$4$, b-$2$, c-$3$, d-$1$


Correct Option: C
Explanation:
•Zoophily is the pollination by animals.
•Ornithophily is the pollination by means of birds.
•Entomophily is the pollination by means of insects.
•Cheiropterophily is pollination by means of bats.
Hence, the correct match is:
a-4 , b-1 , c-2 , d-3 
So, the correct answer is C.

The association between ants and some members of family rubiaceae is 

  1. Ornithophily

  2. Entomophily

  3. Myrmecophily

  4. Anemorphily


Correct Option: C
Explanation:

Myrmecophily is the symbiotic relationship of ants and plants in which the ants get food and place to stay while plants get a pollinator or a method of seed diepersal. It is widely used by family Rubiaceae which is a family of coffee.

So the correct option is 'Myrmecophily'.

Large stout, nocturnal flowers producing copious nectar and emitting fermenting fruity odor, are the adaptations for.

  1. Entomophily

  2. Ornithophily

  3. Chiropterophily

  4. Anemophily


Correct Option: C
Explanation:
Pollination occurs through bats is called chiropterophily and flower is called a chiropterophilous flower. Adaptations in chiropterophilous flower :
1. Flowers open during evening or night. 
2. Flowers are large, dull colored and have a strong scent like that of rotting fruits. 
3. Flowers produce abundant pollen grains. 
4. Flowers produce copious nectar.
5. Flowers are tough so that bats can hold on the flowers.
So the correct option is "Chiropterophily".

Which one is absent in windy areas

  1. Birds

  2. Anemophilous plants

  3. Zoophilous plants

  4. Insects


Correct Option: C
Explanation:

Windy areas are favorable for plants in which pollination is done by the wind like corn, willow etc while it is unfavorable for those in which pollination is done by animals as it is very difficult to survive.

So the correct option is 'Zoophilous plants'.

Pollination by bats is called as

  1. Chiropterophily

  2. Omithophily

  3. Malacophily

  4. Entomophily


Correct Option: A
Explanation:
Pollination by bats is called as Chiropterophily. Flowers that are pollinated by this mechanism usually are usually pale and nocturnal. The advantage of pollination by bats is that they do long distance dispersal of pollen along with depositing huge amount of pollen on the stigmas.
So, the correct answer is, 'Chiropterophily'.

Animals assist with

  1. Pollination and seed dispersal

  2. Control of plant growth and response

  3. Translocation of organic nutrients

  4. Asexual propagation of plants


Correct Option: A
Explanation:

Pollination is when pollen grains from an anther, the male portion of a flower, are transferred to a female part in the flower, known as the stigma. Zoophily is a form of pollination whereby pollen is transferred by animals. Zoophilous species frequently evolve mechanisms to make themselves more appealing to the particular type of pollinator. Seed dispersal is the movement or transport of seeds away from the parent plant. Plant species transported externally by animals can have a variety of adaptations for dispersal, including adhesive mucus, and a variety of hooks, spines and barbs

So, the correct answer is 'pollination and seed dispersal'

Myrmecophily is characterised by 

  1. Plants harbouring ants

  2. Plants storing food underground

  3. Plants imitating the habit of animals

  4. Plants with small leaves


Correct Option: A
Explanation:

Myrmecophily is the symbiotic relationship between plant and ants in which plants provide food to plant or place to hide eggs and ants help them in pollination. 

So the correct option is 'Plants harbouring ants'

Pollination by insects is called

  1. Entomophily

  2. Chiropterophily

  3. Anemophily

  4. Zoophily


Correct Option: A
Explanation:

Pollination by insects is entomophily. Insects are the most common biotic agents of pollination. Bees are the most common insect which acts as pollinating agents. Other insect pollinators are butterflies, flies, beetles, wasps, ants, moths. Flowers are brightly colored and scented to attract the insects. Majority of insect-pollinated flowers are large-sized. Entomophily occurs in Calotropis, Ficus, Salvia, etc.

Pollen grains have spiny exine to aid in

  1. Entomophily

  2. Anemophily

  3. Ornithophily

  4. Cheiropterophily


Correct Option: A
Explanation:
• Entomophily is the pollination of flowers by means of insects.
• Anemophily is the pollination of flowers by means of wind.
• Ornithophily is the pollination of flowers by means of birds.
• Chiropterophily is the pollination of flowers by means of bats.
The pollen grains which have spiny exine are related to Entomophily i.e. pollination by insects. Spines help in the attachment of the pollen to the body of pollinators. This, pollen grains have spiny exine to aid in Entomophily.
So, the correct answer is A.

In entomophily, pollinating agents are

  1. Insects

  2. Bats

  3. Birds

  4. Ants


Correct Option: A
Explanation:

In entomophily, insects are the pollinating agents. Insects are the most common biotic agents of pollination. Bees are the most common insect which acts as pollinating agents. Other insect pollinators are butterflies, flies, beetles, wasps, ants, moths. Majority of insect-pollinated flowers are large-sized. These flowers are scented, colorful and fragrant and contain nectaries to attract insects. 

Hence, option A is the correct answer.

Hydrophily occurs in
  1. Nymphaea

  2. Nelumbo

  3. Eichhornia crassipes

  4. Vallisneria/ Zostera


Correct Option: D
Explanation:
Hydrophily is pollination of flowers by means of water. Example Zostera
When pollination occurs by water in the plants floating on the surface of the water, it is called Ephydrophily. Example Vallisneria.
In Zostera, long needle-shaped pollens are produced which float in the water. The female flower produces long structure from the stylar stigmatic region which extends to the water surface and coils around the pollen grain and pulls it underwater and thus, pollination occurs.
In Vallisneria, the male flowers detach on maturity and float on the surface of the water while the female flowers grow under water and they come up to the surface with the help of their thin long stalk. As the stalk grows further, the flowers which were vertical become horizontal and thus, a cup-like depression is formed around the female flower. The male flowers which are floating on the surface of the water, fall into the cup and due to jerk, the anthers dehisce and pollens are transferred to the stigma and thus, pollination occurs on the surface of the water. 
Hence, hydrophily occurs in Vallisneria and Zostera.
So, the correct answer is D.

Which pollinating agents is responsible to bring about $80\%$ of pollination?

  1. Insects

  2. Water

  3. Humans

  4. Wind


Correct Option: A
Explanation:
  • About 80 percent of all plant pollination is biotic i.e it is carried out by insects such as bees, wasps, and birds.
  • The remaining 20 percent of abiotically pollinated species, 98 percent is by wind pollination and 2 percent by water pollination.

Spiny or sticky pollen grains and large, attractively coloured flowers are associated with

  1. Hydrophily

  2. Entomophily

  3. Ornithophily

  4. Anemophily


Correct Option: B
Explanation:

Entomophily type of pollination takes place through the agency of insects. The entomophilous flowers are brightly colored and fragrance to attract the insects. Their pollen grains are sticky or spiny to easily get attached with the body of pollinators. When the insects visit the flowers, their body gets dusted with pollen grains, and when they fly and visit other flowers, they brush against the stigma which being sticky, at once receives the pollen grains from their body. Thus, cross-pollination is achieved. 

So, the correct answer is 'Entomophily'.

Thread-like pollen without exine are found in
  1. Hydrophily

  2. Entomophily

  3. Anemophily

  4. Chiropterophily


Correct Option: A
Explanation:
Thread like pollen are found in Hydrophily where pollination occurs by means of water. Such pollen grains sometimes lack exine and form thread-like structures called the viscin threads. These structures aid the pollen to swim in water and thus, pollination can occur when they come in contact with a female flower.
So, the correct answer is A.

The hydrophilous flowers, pollinated completely under water, are known 

as ...............

  1. Epihydrogamous

  2. Hypohydrogamous

  3. Both (A) and (B)

  4. Polyhydrogamous.


Correct Option: B
Explanation:

Hypohydrogamy includes the plants which are pollinated inside the water, e.g., Ceratophyllum, Naja, etc. Epihydrogamous - includes the plants which are pollinated on the surface of water.

The pollination is ......... in eel grass

  1. Hydrophilous

  2. Zoophilous

  3. Entomophilous

  4. Anemophilous


Correct Option: A
Explanation:

A tethered structure of the eel grass flower draws in free sailing male flowers for pollination by forming a dimple on water surface. The female flower is also blown by the wind, but it is anchored by its stem. As the breeze tugs at it, so its stem pulls it lower in the water, creating a dimple in the surface. The male ship, moving freely, sails into the dimple, toboggans down its slope and collides so violently with the female flower that the pollen is knocked out of its anthers. The female flower, having achieved fertilization, then closes.

Underwater, pollination occurs in

  1. Zostera

  2. Nymphaea

  3. Vallisneria

  4. None of the above


Correct Option: A
Explanation:

Hydrophily includes plants which are pollinated inside the water. Zostera marina is a submerged marine perennial. The pollen is exceptionally long and needle like. Specific gravity of these pollen is almost the same as that of sea water. Consequently, they can freely float in water any depth. The stigma is also very long in this plant. If the pollen comes in contact with the stigma, it coils around water. 

Bees are very important for agriculturists as .................

  1. They give bees wax

  2. They are agents for pollination

  3. Are agents to carry fruits

  4. Produce honey


Correct Option: B
Explanation:

The most recognized pollinators are the various species of bees, which are plainly adapted to pollination. Bees typically are fuzzy and carry an electrostatic charge. Both features help pollen grains adhere to their bodies but they also have specialized pollen carrying structures; in most bees takes the form of a structure known as scopa, which is on the hind  legs of most bees, and or the lower abdomen made up of thick plumose setae. Honey bees, bumblebees and their relatives do not have a scopa, but the hind leg is modified into a struture called the corbicula. Most bees gather nectar, a concentrated energy source and pollen, which is high protein food, to nurture their young and inadvertently transfer some among the flowers as they are working.

Pollination in Vallisneria is by

  1. Wind

  2. Animals

  3. Insects

  4. Water

  5. Wind and insects


Correct Option: D
Explanation:

Vallisnaria is the genus of aquatic plant. In this plant, pollination is done by pollinating agent i.e., water. Female flowers have long stalk and appears on the surface of the water. When the male flower releases pollen grain it reaches to the stigma of female flower through water current.

Maize is 

  1. Self pollinated

  2. Cross pollinated by rain

  3. Cross pollinated by insects

  4. Cross pollinated by wind


Correct Option: D
Explanation:

Corss pollination is when pollen from one plant pollinates flowers on a different plant. With maize, cross-pollination is preferred because it is a monoecious crop with male and female flowers in separate parts of the same plant. So, male part produces a large number of pollen grains, which are then distributed by wind to other female parts of another maize plants.
Thus, the correct answer is option (D), 'Cross pollinated by wind'.

The chief pollinators of our agri horticultural crops are .....................

  1. Moths

  2. Bees

  3. Beetles

  4. Butterflies


Correct Option: B
Explanation:

The most recognized pollinators are the various species of bees, which are plainly adapted to pollination. Bees typically are fuzzy and carry an electrostatic charge. Both featured help pollen grains adhere to their bodies, but they also have specialized pollen carrying structures; in most bees , this takes the form of a structure known as the scopa, which is on the hind legs of most bees, and the lower abdomen, made up of thick, plumose setae, honey bees, bumble bees and their relatives do not have a scopa, but the hind leg is modified into a structure called as corbicula. Most bees gather nectar, a concentrated energy source and pollen, which is high protein food, to nurture their young and inadvertently transfer some among the flowers as they are working.

Hydrophily is best demonstrated by

  1. Nelumbium

  2. Vallisneria

  3. Nymphaea

  4. Ranunculus


Correct Option: B
Explanation:

  • Hydrophily is the pollination by means of water. In Vallisneria, the male flower is detached from the plant and float on the surface of the water and is bought in the contact of the stigma of the female flower. 

So, option B is correct.

Insect pollinated flowers usually possess

  1. Sticky pollens with rough surface

  2. Large quantities of pollens

  3. Brightly coloured pollens

  4. Dry pollens with smooth surface


Correct Option: A
Explanation:

Insect-pollinated flowers usually possess sticky and heavy pollens with a rough surface that allow them to stick to insects easily. Flowers also have sweet nectar that attracts insects that go from flower to flower to pollinate the flowers. The pollen grains are also in small quantities, because it is very likely that insects will enter another flower, and the pollen grains would have a higher chance of landing on the stigma. That's why there is no need of pollen grains in large quantities. 



Entomophily is pollination by

  1. Water

  2. Animals

  3. Air

  4. Insects


Correct Option: D
Explanation:

  • Pollination is the transfer of pollen from the male anther to the female stigma. It is carried out with the help of animals, birds, insects, water, wind, etc. 
  • The pollination carried out by insects is called entomophily. 
  • Pollination carried out by water is called hydrophily. Pollination carried out by the wind is called anemophily.
  •  Pollination carried out by the animals is called zoophily. 

So, the correct answer is option D.

Flowers which are pollinated by insects are

  1. Colourless

  2. Small in size

  3. Large, coloured and scented

  4. Very large in size


Correct Option: C
Explanation:
  • Insect-pollinated flowers have large, bright, scented and colourful petals so that insects would be attracted to the flower. 
  • Also, they have nectar near the receptacle on the interior of the flower. So, the insects will enter the flower and can aid in pollination where the pollen grains from the anther in the flower gets scraped onto the insect to be transferred to the stigma of another flower. This form of pollination is known as Entomophily

So, the correct answer is 'Large, coloured and scented'

Lever mechanism for pollination is characteristic feature of

  1. Ficus

  2. Salvia

  3. Ocimum

  4. Ranunculus


Correct Option: B
Explanation:

Pollination mechanism in Salvia is a unique lever type. The flowers in this genus are arranged in thyrsus inflorescence and they are attractive and well adapted for cross-pollination through the agency of insects. In this lever mechanism of pollination, the Corolla has a spreading upper lip, which acts as a landing place for the insect. When the insects land on the lower lip of the corolla and in its endeavour to obtain nectar that is secreted by the hypogynous disc, pushes the sterile lobes of the stamen inwards. Due to this the upper half of the connective with the fertile lobes act as a lever. Then the anther lobe comes down and shed the pollen on the back of the insect.

The insect Blastophaga grossorum is associated  with the pollination of 

  1. Mango

  2. Ficus

  3. Paddy

  4. Nelumbium


Correct Option: B
Explanation:
Blastophaga grossorum is a wasp that specifically pollinates Ficus species. They exhibit a co-evolutional relationship existing for millions of years now. Blastophaga locates the ficus plant using its olfactory senses. This is an example of fig-wasp mutualism.
So, the correct answer is, 'Ficus'.

In Salvia, the pollination is affected by

  1. Water

  2. Air

  3. Animals

  4. Insects


Correct Option: D
Explanation:

  • The pollination mechanism in Salvia is a unique lever type. The flowers in this genus are arranged in thyrsus inflorescence and they are attractive and well adapted for cross-pollination through the agency of insects. 
  • In this lever mechanism of pollination, the Corolla has a spreading upper lip, which acts as a landing place for the insect. When the insects land on the lower lip of the corolla and in its endeavor to obtain nectar that is secreted by the hypogynous disc, pushes the sterile lobes of the stamen inwards.
  •  Due to this the upper half of the connective with the fertile lobes acts as a lever. Then the anther lobe comes down and shed the pollen on the back of the insect.

 So, option D is correct.

Flowers, which are pollinated by insects, are

  1. Colourless

  2. Small in size

  3. Large, coloured and scented

  4. Sticky


Correct Option: C
Explanation:
Insects visit flowers that are open during the day. They are large, brightly coloured and have a strong scent. They have a tubular shape and a nectar guide. A nectar guide is regions on petals that are visible only to bees. This portion guides the bees to the centre of the flower helping in pollination. Thus the correct answer is option C.

Lever mechanism for pollination is characteristic feature of 

  1. Ficus

  2. Salvia

  3. Ocimum

  4. Ranunculus


Correct Option: B
Explanation:

Lever mechanism for pollination is characteristic feature of Salvia. The flowers in this genus are arranged in thysrus inflorescence and they are attractive and well adapted for cross pollination through the agency of insects. In this mechanism of pollination, the corolla has a spreading upper lip, which acts as a landing place for the insect. When the insects land on the lower lip of the corolla and in its endeavour to obtain nectar that is secreted by the hypogynous disc, pushes the sterile lobes of the stamen inwards. Due to this the upper half of the connective with the fertile lobes act as a lever. Then the anther lobe comes down and shed the pollen on the back of the insect.

So, the correct answer is option B.

In Ficus religiosa (peepal), the pollination is affected by

  1. Water

  2. Insects

  3. Birds

  4. Air


Correct Option: B
Explanation:
  • Blastophaga quadriceps, the legitimate pollinator of Ficus religiosa, possesses two thoracic pockets in which pollen is stored for subsequent introduction into the young figs.  
  • Pocket loading takes place in the nearly ripe fig at the male phase. Impregnated female wasps leave the fig via narrow channels bored by the males. 
  • Upon entering young receptive figs, the female wasps begin oviposition, during which pocket emptying and pollination takes place.

Hydrophily is best demonstrated by  

  1. Nelumbium

  2. Vallisneria

  3. Nymphaea

  4. Ranunculus


Correct Option: B
Explanation:

Pollination by means of water is called as Hydrophily. In Vallisneria, the male flower is detached from the plant and it will float on the water and are bought in the contact of the stigma of the female flower.

So the correct option is 'Vallisneria.'

Assertion : Insects visit flowers the gather honey.

Reason : Attraction of flowers prevents the insects from damaging other parts of the plant.

  1. Both assertion and reason are true and reason is a correct explanation of the assertion.

  2. Both assertion and reason are true but reason is not a correct explanation of the assertion.

  3. Assertion is true but Reason is false

  4. Both Assertion and Reason are false

  5. Assertion is false but Reason is true


Correct Option: D
Explanation:

Insect visit flowers to get nectar. The attraction of flower in plants is not to diverge the insect from damaging other part, but to bring about pollination (i.e., transfer of pollen to the stigma).

The flower is important to a plant because it helps in

  1. Attracting

  2. Production of nectar

  3. Pollination

  4. All of the above


Correct Option: D
Explanation:

All the flowers are important to plant as they attract pollinators by producing nectar, attracting pollinators and helps to plants in the reproduction process by pollination.

So, the correct option is 'All of the above.'

Which of the following structure/arrangement favours entamophily the most?

  1. Pollen grains with wings and feathery stigma

  2. Colourful petals and nectar secretion

  3. A bunch of flowers with less pollen

  4. Pollen grains with mucous covering


Correct Option: B
Explanation:

Pollination through insect is called as entamophily in which insect is attracted by nectar secreted by flower and colorful petals.

So the correct option is 'Colourful petals and nectar secretion.'

In Vallisneria, pollination is

  1. Hydrophilous

  2. Cleistogamous

  3. Anemophilous

  4. Entomophilous


Correct Option: A
Explanation:

In Vallisneria, pollination is hydrophilous. Pollination carried out through water is hydrophily. Light and unwettable pollen grains are present in these plants. Pollen grains are surrounded by mucilaginous covering, hence protected from wetting.

An insect helping in pollination is

  1. Drosophila

  2. Musco nebulo

  3. Bombyx mori

  4. Apis dorsata


Correct Option: D
Explanation:
Most of the major crops heavily depend on the pollination through the giant honey bee, Apis dorsata. Some of the crops are cotton, mango, coconut, coffee, pepper, star fruit, and macadamia.
So the correct option is Apis dorsata.

The nectar is produced in the flowers which are pollinated by 

  1. Wind

  2. Water

  3. Man

  4. Insects


Correct Option: D
Explanation:

Many flowers produce nectar. When an insect lands on a flower to feed, pollen grains stick to its body. As the insect moves to another flower of the same species, these pollen grains are transferred to the flower’s stigma and pollination occurs.

So the correct option is 'Insects'.

Pollination in Vallisneria is

  1. Epihydrophily

  2. Hypohydrophily

  3. Subhydrophily

  4. Both B and C


Correct Option: A
Explanation:

Pollination in Vallisneria is epihydriphilous. It is a type of hydrophily which occurs on the surface of water. The female flower have a very long pedicel, therefore it reaches the surface of water. Male flowers after breakage floats on the surface of water. Pollen grains are released on to the surface of water. They are carried passively by water currents, some of them eventually reach the female flowers and the stigma.

Pollination by water occurs in

  1. Ceratophyllum

  2. Zostera

  3. Lemna

  4. Both A and B


Correct Option: D
Explanation:
Pollination by water occurs in Ceratophyllum and Zostera. These are aquatic plants. Pollination carried out through water is hydrophily. Pollination by water is quite rare in flowering plants and is limited to about 30 genera, mostly monocots, e.g. freshwater plants and marine water plants. Light and unwettable pollen grains are present in these plants.
Zostera is a totally submerged marine angiosperm. It has long, elongated and needle-like pollen grains which are without exine. They float below the surface of water and pollination by water occurs in this plant. 

Ceratophyllum is a totally submerged freshwater plant. 30-45 stamens are present in male flower. When sinking in water, female flowers come in contact with the pollen grains released from the male flower to effect pollination.
Lemna is also a water plant, but it undergoes pollination by the means of snail i.e., malacophily.

Some plants harbour ants to save themselves from other animals. It is

  1. Anemophily

  2. Entomophily

  3. Myrmecophily

  4. Hydrophily

  5. Zoophily


Correct Option: C
Explanation:

Anemophily is a type of pollination in which pollination takes place with the help of wind. Entomophily is a type of pollination in which pollination takes place through insect. Myrmecophily is a mutual association of some plants with ants to save themselves from other animals. Hydrophily is a type of pollination in which pollination occurs through flow of water. 

Thus, the correct answer is option C.

Moth Pronuba($=$ Tegaticula) passes its larval stage in plant pollinated by it. The plant is?

  1. Ficus cairica

  2. Yucca

  3. Tagetes

  4. Cosmos


Correct Option: B
Explanation:

The Yucca moth is also termed as the Pronuba moth. It is a small white moth that lives in the semi-arid habitats where Yucca plants grow. The Yucca moth is well-known for its relationship with the Yucca plant. The Yucca moth’s larvae are relying on the seeds of the Yucca plant as a primary food source. No one can exist without the other, creating an obligate mutualism between the moth and the plant. It is true for types of Yucca moths such as Tegeticula .


 So correct answer is option B.

In Salvia, pollination occurs through the agency of

  1. Insects

  2. Bats

  3. Ants

  4. Snails


Correct Option: A
Explanation:

In Salvia, pollination occurs through the agency of insects. When insects are the pollinating agents, then pollination is known as entomophily. These are the most common biotic agents of pollination. Bees are the most common insect which acts as pollinating agents. Other insect pollinators are butterflies, flies, beetles, wasps, ants, moths. Majority of insect-pollinated flowers are large-sized. Small-sized flowers are clustered into an inflorescence. Flowers are colourful and fragrant. Nectaries are present. The pollen grain is sticky.

Salvia genus belongs to family Labiatae. In these plants, the gametopetalous corolla is two-lipped. The lower lip provides the platform for the visiting insect and the upper lip just protects the floral organs. In these plants, cross-pollination occurs only when the pollen-dusted bee visits older flowers with mature gynoecium.

Pollination with the help of snails is called.

  1. Myrmecophily

  2. Malacophily

  3. Lepidopterophily

  4. Entomophily


Correct Option: B
Explanation:

Pollination is processed by the agent which transfers pollen from the pollen sac or anther to the stigma or ovule in the flower. Pollination done by snails is called malacophily. Such type of flowers is called as malacophilous. These flowers achieve pollination only by the help of snails and slugs.

Thus, the correct answer is malacophily.

Correct option is B.

Fragrant flowers with well developed nectaries are an adaptation for

  1. Zoophily

  2. Anemophily

  3. Entomophily

  4. Hydrophily


Correct Option: C
Explanation:

Fragrant flowers with well-developed nectaries are an adaptation for entomophily. In entomophily, insects are the pollinating agents. These are the most common biotic agents of pollination. Bees are the most common insect which acts as pollinating agents. Other insect pollinators are butterflies, flies, beetles, wasps, ants, moths. Majority of insect-pollinated flowers are large-sized. These flowers are colorful and possess fragrance to attract the insects. Nectar is given as a reward to insects. Thus, option C is correct.

The process of transfer of pollen grains from anther to stigmatic surface of flower with the help of water is

  1. Anemophily

  2. Hydrophily

  3. Zoophily

  4. Ornithophily


Correct Option: B
Explanation:

The process of transfer of pollen grains from the anther to stigmatic surface of the flower with the help of water is hydrophily. Pollination by water is quite rare in flowering plants and is limited to about 30 genera, mostly monocots, e.g. freshwater plants like Vallisneria, Hydrilla; marine water plants like Zostera. Light unwettable pollen grains are present in these plants. Pollen grains are surrounded by mucilaginous covering, hence protected from wetting. Stigma is long, sticky and unwettable.

Pollination by water may occur at two places: 
  1. Epihydrophily: It occurs on the surface of the water. e.g. Vallisneria.
  2. Hypohydrophily: It occurs beneath the surface of the water. e.g. Zostera.

Choose the mismatched option.

  1. Wind - Cannabis - Anemophily

  2. Water - Zostera - Hydrophily

  3. Insects - Salvia - Entomophily

  4. Birds - Adansonia - Ornithophily

  5. Bats - Kigelia - Chiropterophily


Correct Option: D
Explanation:
• Pollination by means of wind is called Anemophily. Example, Cannabis.
• Pollination by means of water is called Hydrophily. Example, Zostera.
• Pollination by means of insects is called Entomophily. Example, Salvia.
• Pollination by means of birds is called Ornithophily. Example, Begonia.
• Pollination by means of bats is called Chiropterophily. Example, Kigelia.
Hence, the mismatched pair is D, because Adansonia is a plant which is pollinated by bats, not by birds.
So, the correct answer is D.

Pollination in Lotus is carried out by

  1. Wind

  2. Water

  3. Insects

  4. All the above


Correct Option: C
Explanation:
Lotus has bisexual flowers but anthers and stigma mature at different times so self pollination doesn't occur. Thus, Lotus is cross-pollinated by beetles. Beetles are attracted to the Lotus flower by the odour of the nectar. Beetle enter the flower at night and stays there for the whole night. The flower opens in the morning and beetle visits another flower at night. Thus, as the beetle visits different flowers, pollen from one flower are transferred to the stigma of different flowers because pollen get attached to the body of the beetles. Hence, this type of cross-pollination occurs in Lotus by means of insects i.e. beetles. So, the correct answer is C.

Entomophilous flowers are related to

  1. Honey bees

  2. Wind

  3. Water

  4. Hairy Mammals


Correct Option: A
Explanation:
Entomophilous flowers are the flowers that are pollinated by insects. From all the options given in the question, honey bees are the insects. So, entomophilous flowers are related to honey bees as honey bees pollinate them.
So, the correct answer is A.

Which of the following features is/ are common to both wind and water pollinated flowers?
I. Pollen grains are long and ribbon-like
II. Stigma is large and feathery
III. Flowers are not colourful
IV. Flowers do not produce nectar.

  1. III and IV

  2. II and III

  3. I and II

  4. II

  5. I


Correct Option: A

Butterflies pollinate

  1. Bluish flowers

  2. Violet flowers

  3. Reddish flowers

  4. Purple flowers


Correct Option: A
Explanation:
Butterflies are attracted to the flowers that are scented, showy and bright in color. Butterflies can see the colors in ultra violet range and their most preferred color of flowers for pollination is blue. Hence, butterflies pollinate bluish flowers.
So, the correct answer is A.

"Pollen grains are protected by a mucilaginous covering and having a specific gravity". This is characteristic of which type of pollination.

  1. Anemophily

  2. Entomophily

  3. Hydrophily

  4. Zoophily


Correct Option: C

Select the plants pollinated by water.
(a) Water Hyacinth
(b) Zostera
(c) Amorphophallus
(d) Vallisneria
(e) Yucca.

  1. a, d and e

  2. b and e

  3. b and d

  4. b, c, d

  5. a, b and d


Correct Option: C

Insects visit flowers to help in pollination.

  1. True

  2. False


Correct Option: A
Explanation:

Pollination is the transfer of pollen from a male part of a plant (anthers) to a female part of a plant (stigma), enabling later fertilisation and the production of seeds, most often by an animal or by the wind. Pollination is a very important part of the life cycle of plants. Entomophily or insect pollination is a form of pollination whereby pollen of plants, is distributed by insects. A major role of the insect is that of pollinator, meaning they transfer pollen from plant to plant (or sometimes within the same plant), which results in the development of a seed.

So the given statement is true.

Which one is applicable to insect pollinated flowers?

  1. Flowers are very small produced in large quantities

  2. Flowers are not prominent and without nectar

  3. Flowers are conspicuous and scented having nectar

  4. None of these


Correct Option: C
Explanation:

When the flowers are pollinated by insects, it is called entomophily. Such flowers has evolved mechanisms to make themselves more appealing or conspicuous to insects by having bright colors or scented flowers, nectar or appealing shapes and patterns.
Thus, the correct answer is option (C), 'Flowers are conspicuous and scented having nectar'.

The insect Blastophaga grossorum is associated with the pollination of

  1. Mango

  2. Ficus

  3. Paddy

  4. Nelumbium


Correct Option: B
Explanation:
There is a tight mutual dependence between the Ficus species and an insect called Blastophaga grossorum that pollinates it. It is known as Coevolution. This relationship has developed and is persistent for millions of years now.
So, the correct answer is, 'Ficus'.

Match column I with column II and select the correct option from the given codes.

Column I Column II
A. Anemophily (i) Grasses, Date palm
B. Hydrophily (ii) Rose, Jasmine
C. Entomophily (iii) Butea, Bignonia
D. Omithophily (iv) Vallisneria, Ceratophylium
  1. A-(i), B-(iv), C-(ii), D-(iii)

  2. A-(i), B-(iv), C-(iii), D-(ii)

  3. A-(ii), B-(iii), C-(i), D-(iv)

  4. A-(ii), B-(i), C-(iii), D-(iv)


Correct Option: C
Explanation:

Anemophily

It is a form of pollination when pollen grains are distributed by wind. Also, called the anemophilous flower.
Anemophilous pollen grains are light and non-sticky. So, that it can be transferred by air currents. Wind-pollinated flowers are inconspicuous and they not showy and also devoid of nectar etc. as seen in grass
Hydrophily
It is a form of pollination when the pollination takes place through the agency of water.
It is of two types :
Hydrophily: Plants which are pollinated inside the water. e.g. Zoster, Ceratophyllum
Epihydrophilly: Plants which are pollinated outside the water or on the surface of the water. e.g. Vallisneria
Entomophily 
It is a type of pollination, which takes py insect. Insect-pollinated flowers are made attractive in different ways and the pollens are sticky with a rough surface. So, that they may easily stick to insect limbs. e.g. Rose
Ornithophily 
It is the form of pollination when the pollination takes place by birds. e.g. Begonia, Bottlebrush, Butea
So, the correct option is 'C'

Which of the following is pollinated by water?

  1. Viola

  2. Yucca

  3. Oxalis

  4. Commelina

  5. Zostera


Correct Option: E
Explanation:

  • Zostera is the marine seagrass which gets pollinated by water. Pollens are released in water and capture by stigmas.
  • In Viola, the flowers get pollinated by bees.
  • In Oxalis and Commelina, there is no need for pollinator as they are closed flowers. There is no chance of cross-pollination. 
  • In Yucca, the flowers are pollinated by yucca moth.
So, the correct option is 'Option E'.

Vallisneria spiralis is a classical example of

  1. Epihydrophily

  2. Hypohydrophily

  3. Anemophily

  4. Chiropterophily


Correct Option: A
Explanation:

Pollination is the transfer of pollen from a male part of a plant (anther) to a female part of a plant (stigma), enabling later fertilisation and the production of seeds, most often by an animal or by the wind. Hydrophily is a fairly uncommon form of pollination whereby pollen is distributed by the flow of waters, particularly in rivers and streams. Epihydrophily is a pseudo hydrophily that occurs on the surface of the water. Vallisneria pollen grains are released on the surface of the water, which are passively carried away by water currents; some of them eventually reach the female flower.

So the correct option is 'epihydrophily'.

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