Parts of a flower
Description: parts of a flower | |
Number of Questions: 29 | |
Created by: Amal Dixit | |
Tags: the living world of plants the life cycle of plants reproduction biology life processes: reproduction, growth and development flower to flower plants: parts and functions pollination structure and functions of living organisms -i reproduction in higher plants getting to know plants for the continuity of generation |
The reproductive part of a plant is:
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Leaf
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Stem
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Root
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Flower
Flower is the reproductive part of the plant. Pistil, stamens, petals and sepals are the four main parts of the flower. Among this, pistil is the female reproductive part and it is made up of stigma, style and ovary. Stamen is the male reproductive part and it consists of filament and anther.
Which one of the following statements is correct ?
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In tomato, fruit is a capsule
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Seeds of orchids have oil-rich endosperm
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Placentation in primose is basal
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Flower of tulip is a modified shoot
The bulb is the modified underground stem surrounded by the fleshy leaves. It usually contains stored food like the tulip bulb. Also, a capsule is a type of simple but mostly dry and dehiscent fruit. Some examples are Cotton, Eucalyptus, Datura, Witch Hazel. Orchid seeds don’t have endosperm. Primrose is having free central placentation.
Thus, the correct answer is option D.
Identify the wrong statement.
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A plant that bears male, female and bisexual flowers is polygamous
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Actinomorphic flower can be dissected into two equal halves from any plane
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Superior ovary is found in hypogynous flowers
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Side of the flower towards the bract is called posterior side
The wrong statement is " the side of the flower towards the bract is called posterior side"
In Hibiscus, plants grow from
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Seeds
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Flowers
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Roots
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Branches
Both hardy and tropical hibiscus are propagated from cuttings. Hibiscus cuttings are normally the preferred way of propagating hibiscus because a cutting will grow to be an exact copy of the parent plant. When using hibiscus cuttings to propagate hibiscus, start by taking the cutting. The cutting should be taken from new growth or softwood. Softwood is branches on the hibiscus that have not yet matured. Softwood will be pliable and often has a greenish cast. You will mostly find softwood on a hibiscus in spring or early summer.
The botanical name of boat lily is
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Tradescantia
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Syzygium aromaticum
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Calotropis
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Homo sapien
Tradescantia spathacea is boat lily. Calotropis is milkweed. Homo sapien is human. Syzygium aromaticum is cloves.
Reproduction in rose plant is through
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Stem
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Flowers
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Roots
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Seeds
A small part of a plant which is removed by making a cut with a sharp knife is called a 'cutting'. A cutting may be a piece of stem, root or even a leaf. While making a cut, care should be taken to see that there are some buds on it. Cutting is a part of artificial reproduction. In this method, a cutting of the parent plant (say, of stem or shoot) having some buds on it is taken and its lower part is buried in the moist soil. After a few days, the cutting develops roots, shoot and grows into a new plant. Cuttings are a means of asexual reproduction in plants. The new plant formed from a cutting is exactly similar to the parent plant. The plants like rose, Bougainvillea, Chrysanthemum, grapes, sugarcane, bananas, and cactus, etc., can be grown by means of cuttings. For example, rose plant and Chrysanthemum are propagated (or reproduced) by means cuttings from stems (or shoots) as follows. A piece of stem (or side shoot) having bud is cut from an existing rose plant with the help of a knife. The lower part of this gutting is buried in moist soil. After a few days, the end of cutting buried in soil develops roots and later on grows to become a new rose plant. An advantage of cuttings method is that by using this method we can produce many new plants from just one plant quickly, without waiting for flowers and sexual reproduction.
Trees without flowers
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Mustards
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Palm trees
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Pine trees
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Pomegrenedes
Conifers belong to gymnosperm. These have seeds in the cones. These are non-flowering plants. Cones are the reproductive organs. These are characterized by needle-shaped leaf.
Calotropis is the botanical name for
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Lotus
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Jasmine
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Milkweed
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Oleander
Calotropis is a genus of flowering plants in the dogbane family, Apocynaceae, first described as a genus in 1810. It is native to southern Asia and North Africa. They are commonly known as milkweeds because of the latex they produce. Calotropis species are considered common weeds in some parts of the world. The flowers are fragrant and are often used in making floral tassels in some mainland Southeast Asian cultures. Fibers of these plants are called as madar or mader. Calotropis species are usually found in abandoned farmland. Lotus is Nelumbo nucifera. Jasmine is Jasminum sp. Oleander is Nerium sp.
The plant which opens during nights and closes in daytime is
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Night queen
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Touch-me-not
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Vallisneria
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Jasmine
The plant which opens during nights and closes in daytime is night queen. It is called as raat ki rani in India. It is an evergreen woody shrub growing to 4 metres (13 ft) tall. The leaves are simple, narrow lanceolate, 6–20 centimetres (2.4–7.9 in) long and 2–4.5 centimetres (0.79–1.77 in) broad, smooth and glossy, with an entire margin.
The floral bud is enclosed by which part of the flower?
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Sepals
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Petals
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Tepals
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Stamen
Floral bud is the undeveloped or embryonic shoot which is protected by the sepals during bud stage which gets mature and it forms coloured petals that helps flower to attract pollinators.
What are the characteristics associated with the flower?
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Green leaves
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Colourful petals
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Green sepals
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Both B and C
- Calyx which is considered as the outermost whorl and its unit is known as sepals and are green in colour helps in protection of bud of a flower.
- Corolla is the second nonessential unit and is composed of petals and are coloured which helps to attract pollinators.
So, the correct option is 'Both B and C'.
Bell shaped flowers are found in
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Maize
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Datura
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Chrysanthemum
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Marigold
- Maize has an inflorescence of spikelets as flowers are born on an axis called rachilla surrounded by bracts.
- Datura flower is bell-shaped and a solitary flower.
- Chrysanthemum often shows solitary head inflorescence.
- Marigold has spike inflorescence means with short or no pedicel are elongated and unbranched peduncle.
Flower is the part of the plant which
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Forms the vegetable
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Forms the fruit
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Contains the stamens and pistil
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All of the above
The flower is considered as the modified shoot that is meant for reproduction and contains the reproductive organs stamen (male reproductive part) and pistil (female reproductive part) and after fertilization, its parts convert into fruits and vegetables as a result of reproduction.
The ovary contains the small structures called as
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Beads
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Ovules
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Pollens
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Both B and C
Carpels, pistil or gynoecium are the female reproductive part of the flower that consists of a stigma that holds the pollen grains, the style that leads the path of pollen tube and ovary produce small structures called ovules or ovum (female gamete).
A clove represents a
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Terminal bud
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Accessory bud
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Flower bud
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Vegetative bud
Cloves represent the flower bud. They are aromatic. They are flower buds of a tree Syzygium aromaticum belonging to the family Myrtaceae.
Plants that produce sexually do not produce flower.
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True
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False
Sexual reproduction of following plants was discovered by
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Camerarius
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Nawaschin
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Strasburger
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Maheshwari
A.Camerarius – He first discovered sexual reproduction in plants.
B.Nawaschin – He first discovered triple fusion and double fertilization in angiosperms.
C.Strasburger – He first discovered syngamy and monosporic embryo sac in angiosperms.
D.Maheswari – He first discovered the lab to land habit in plants.
So, the correct option is ‘Camerarius’.
VERY SHORT ANSWER TYPE
Match the parts in Column A with the flowers or parts of flower in Column B.
Column A | Column B |
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(a) Polyadelphous | (i) Polypetalous |
(b) Pollen grains | (ii) Calyx, corolla |
(c) Free petals | (iii) Nectar |
(d) Non-essential | (iv) Bombax |
(e) Sweet fragrant fluid | (v) Pollen sac |
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a-v, b-iv, c-iii, d-ii, e-i
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a-i, b-ii, c-iii, d-iv, e-v
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a-iv, b-v, c-i, d-ii, e - iii
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a-ii, b-v, c-i, d-iv, e-iii
Free petals - Polypetalous
Anther and filament are the parts of
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Style
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Stigma
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Stamen
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Ovary
The style is the part of the pistil which leads to the formation of the pollen tube.
Stigma is the part of the pistil which holds the pollen.
Stamen is the male reproductive part of the flower which is made up of two parts the filament which is a stalk that attaches to anther bilobed structure that forms pollen grains.
The ovary is the main female part that leads to the formation of an ovum.
So, the correct option is 'Stamens'.
The part of the plant which produce pollens are
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Ovules
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Anther
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Filament
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Both B and C
Anther is the bilobed structure that forms pollen grains which are attached with a stalk known as filament and they combine to form the stamens which are known as the male reproductive part of a plant.
Some example are given below how many of them have both following characters?
(1) Axile placentation
(2) Adhesion of stamen
Salyia, Mustard, China rose, Dianthus, Argemone, Tomato, Potato, Oetunia, Gloriosa, Aloe, Sesbania, Trifolium
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Three
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Four
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Seven
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Six
Which of the following characteristics are associated with petals?
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Green in colour and leaf-like
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Colourful and have different shapes
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Male part of the flower
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Female part of the flower
Corolla is the nonessential unit of a flower and is composed of petals and are colored with distinct shapes and sizes which helps to attract pollinators.
The bisexual flowers contain both
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Pistil and stamen
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Ovary and anther
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Pistil and ovule
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Ovary and stamen
Stamen or androecium are the male reproductive part and responsible for the production of pollen grains (male gamete). Pistil or gynoecium are the female reproductive part and produce ovum (female gamete). If both the organs are present it is called bisexual flower. If one of them is present the flower is referred to as unisexual.
So the correct option is 'Pistil and stamen'.
Study of flowers is
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Anthology
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Phenology
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Floriculture
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Agrostology
- Anthology is the published collection of writings.
- Phenology is the study of cyclic and seasonal natural phenomenon in relation to climate plant and animal life.
- Floriculture is the branch of biology that deals with the study of a flower.
- Agrostology is the branch of botany that deals with grasses.
The male part of the flower is known as
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Filament
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Anther
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Stamen
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Pistil
Stamens or androecium are the male reproductive part contains filament which is a slender stalk and anther is a bilobed structure which is responsible for the production of pollen grains (male gamete).
The classification of the flowers as unisexual and bisexual is on the basis of
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Presence of flowers at the tip of plant
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Presence of anther and filament of plant
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Presence of stamen and pistil in the flower
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Both A and C
Stamens or androecium are the male reproductive part and responsible for the production of pollen grains (male gamete). Pistil or gynoecium are the female reproductive part and produce ovum (female gamete). If both the organs are present it is called bisexual flower. If only one of them is present flower is referred to as unisexual.
So the correct option is 'Presence of stamen and pistil in the flower'.
Which part of the flower used in the formation of pollen tube?
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Style
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Stigma
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Anther
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Filament
- Carpels, pistil or gynoecium are the female reproductive part of the flower that consists of a stigma that holds the pollen grains, the style that leads the path of pollen tube and ovary produce ovum (female gamete).
- Stamens or androecium are the male reproductive part contains filament which is slender stalk and anther is bilobed and responsible for the production of pollen grains (male gamete).
Non-essential parts of flowers are
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Sepals and petals
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Sepals and carpels
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Sepals and gynoecium
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Androecium and gynoecium
Non-essential parts of the flowers are the accessory parts that are not directly involved with the gametes formation and sexual reproduction. The whorls of the calyx (individual unit - sepals) and corolla (individual unit - petals) are involved in the protection of flower and attraction of the pollinators, respectively. So, these are considered to be non-essential parts of flowers.