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Forests and their conservation - class-VIII

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Tick the correct answer.
Mangrove forests can thrive in _______.

  1. saline water

  2. fresh water

  3. polluted water

  4. none of these


Correct Option: A
Explanation:

Saline water,

There are about 80 different species of mangrove trees. All of these trees grow in areas with low-oxygen soil, where slow-moving waters allow fine sediments to accumulate. Mangrove forests only grow at tropical and subtropical latitudes near the equator because they cannot withstand freezing temperatures.

State weather these sentences are true (T) or false (F).
Thorny bushes are found in dry areas of the country.

  1. True

  2. False


Correct Option: A
Explanation:
True.
The Thorn Forests are found in those states in our country where the average annual rainfall is too less or scanty. The semi-arid regions of Gujarat, Rajasthan, Madhya Pradesh, Chhattisgarh, Uttar Pradesh, Haryana & the dry parts of the Deccan plateau are very much suitable for the thorn forests to thrive well and even sustain themselves for a longer time-period.

Tick the correct answer:
Deodars and firs are a type of __________.

  1. Confierous trees

  2. Deciduous trees

  3. Shrubs

  4. None of these


Correct Option: A
Explanation:

Confierous trees,
Deodars are native trees to western Himalayas. They are large evergreen coniferous trees reaching 40-50m tall with a trunk up to 3m in diameter. It has a conic crown with level branches.

In tropical evergreen forest, one of the common animals is ________.

  1. Monkey

  2. Giraffe

  3. Camel

  4. None of these


Correct Option: A
Explanation:

Monkey

Tropical evergreen forests can be moist, in the case of rainforests, or drier with seasonal rain. Both types of tropical evergreen forests have many species of animals. Rainforest animals include monkeys, parrots, smaller animals and large numbers of insects.

Choose the correct option to complete the statements given below:
Sundarbans is in _______.

  1. Andaman and Nicobar Island

  2. West Bengal 

  3. Orissa

  4. Madhya Pradesh


Correct Option: B
Explanation:

Mangrove forests are found mainly in Sunderbans in West Bengal and in the Andaman and Nicobar Islands. Sundari is a well-known species of trees in mangrove forests after which Sunderbans have been named.

Steppe grassland is found in __________.

  1. S. Africa

  2. Australia

  3. Central Asia

  4. None of these


Correct Option: C
Explanation:

Central Asia,

The world's largest steppe region, often referred to as "the Great Steppe", is found in Eastern Europe and Central Asia, and neighboring countries stretching from Ukraine in the west through Russia, Kazakhstan, China, Turkmenistan and Uzbekistan to the Altai, Koppet Dag and Tian Shan ranges.

One important variety of tree in coniferous forest is ________.

  1. Rosewood

  2. Pine

  3. Teak

  4. None of these


Correct Option: B
Explanation:

Pine,

Coniferous forests are also called Taiga. They have tall, softwood evergreen trees. Chir, pine, cedar are important variety of trees in these forests.

Tick the correct answer.
Mahogany and rosewood trees are found in ______.

  1. mangrove forests

  2. tropical deciduous forests

  3. tropical evergreen forests

  4. none of these


Correct Option: C
Explanation:

Tropical evergreen forest,

In India, Evergreen forests which are also identified as Tropical rain forest can be located in the in States such as Kerala and Karnataka. These forests are discovered in the westward slopes of the western ghats. They can be also discovered in mountain ranges of Jaintia and Khasi. Some of the trees which can be located in Indian Tropical Forests are ebony, bamboos rosewood, and reeds. 

To which one of the following types of vegetation does rubber belong?

  1. Tundra

  2. Tidal

  3. Himalayan

  4. Tropical Evergreen


Correct Option: D
Explanation:

Some of the commercially important trees of tropical rain forests are ebony, mahogany, rosewood, rubber and cinchona.

Cinchona trees are found in the areas of rainfall more than _________.

  1. 100 cm

  2. 50 cm

  3. 70 cm

  4. less than 50 cm


Correct Option: A
Explanation:

Cinchona is a genus of flowering plant mostly used as medicinal plant because of the quinones present in it. These are found in the areas where the rainfall is above 100 cm. They are native to the tropical Andean forests of western South America.

Mahagony, ebony and green heart are the trees in _____________.

  1. Coniferous forests.

  2. Evergreen forests.

  3. Monsoon forests.

  4. All of these


Correct Option: B

A _____________ is a dense, scrub like vegetation characterized by dry subtropical and temperate areas.

  1. Thorn forest

  2. Deciduous forest

  3. Mountain forest

  4. None of these


Correct Option: A
Explanation:
A thorny forest is dense, scrub like vegetation characteristic of dry subtropical and warm temperate areas with a seasonal rainfall averaging 250 to 500 mm (9.8 to 19.7 in).
This vegetation covers a large part of southwestern North America and southwestern Africa and smaller areas in Africa, South America, and Australia. 

Which of the following forests are most economical for India?

  1. Tropical deciduous

  2. Tropical wet evergreen

  3. Thorn forests

  4. Tidal forests


Correct Option: A

Sundarbans of eastern India is an example of___________.

  1. marine Ecosystem

  2. grassland Ecosystem

  3. forest Ecosystem

  4. mangrove Ecosystem


Correct Option: D
Explanation:

Mangrove Ecosystem
The name Sundarbans is thought to be derived from sundri or sundari (Heritiera fomes), the name of the large mangrove trees that are most plentiful in the area. The forestland transitions into a low-lying mangrove swamp approaching the coast, which itself consists of sand dunes and mud flats. Mangrove forests constitute about two-fifths of the Sundarbans region’s overall surface area, with water covering roughly half of that area. The landscape is constantly being transformed by the erosional forces of the sea and wind along the coast and by the enormous loads of silt and other sediments that are deposited along the myriad estuaries. Human activity has also altered the landscape, notably through forest removal, which accelerates erosion. In addition, because considerable amounts of river water have been diverted upstream for irrigation and other uses, salinity in the mangrove swamps has moved farther inland, especially in the Indian sector of the territory.

World's maximum newsprint comes from ______________.

  1. Monsoon forest

  2. Mangrove forest

  3. Deciduous forest

  4. Rainfed forest


Correct Option: C

Name the Indian forests containing upper canopy.

  1. Tropical deciduous forests

  2. Mangrove forests

  3. Tropical evergreen forests

  4. Thorny forests


Correct Option: A

Which one of the following is not essentially a species of the Himalaya vegetation?

  1. Juniper

  2. Mahogany

  3. Silver fir

  4. Spruce


Correct Option: B
Explanation:

Mahogany is not essentially a species of the Himalaya vegetation. Mahogany is a species of tree found throughout the Caribbean, central and South America not in Himalayas.

Teak wood is found in which of the following forests?

  1. Evergreen

  2. Tidal

  3. Deciduous

  4. Montane


Correct Option: C
Explanation:

  • Teak wood is moderately hard, teak is durable and fire-resistant. It can be easily seasoned and worked. It takes up a good polish and is not attacked by white ants
  • It is among the most valuable timber trees of the world.
  • It is a deciduous tree and it is found in tropical deciduous forests.

Mahagony, ebony and green heart are the trees in _______________.

  1. Coniferous forests

  2. Evergreen forests

  3. Monsoon forests

  4. All of these


Correct Option: B
Explanation:

The region receives high isolation and moisture throughout the year which are primary requirements of any vegetation, so due to the abundance of these elements, very dense thick and high vegetation is found.

Vegetation species are  Mahogany, Ebony and green heart, cabinet wood and dyewood.

The Thorn and Shrub forests are found in the state of __________.

  1. West Bengal.

  2. Kerala.

  3. Orissa.

  4. Rajasthan


Correct Option: D
Explanation:

The Thorn Forests and Scrubs are found in regions where the rainfall is less than 70cm. The vegetation in these forests are thorny trees and bushes. The Thorn Forests are found in the semi-arid areas of Gujarat, Rajasthan, Madhya Pradesh, Chhattisgarh, Uttar Pradesh and Haryana.

The Tropical Deciduous forest is also known as _______.

  1. Monsoon forest

  2. Tidal forest.

  3. Temperate forest

  4. Tundra forest.


Correct Option: A
Explanation:

The tropical deciduous forests are also called monsoon forest because the trees in these forests shed their leaves during dry season and re-grow during monsoon.

The most dominant species of trees found in the tropical deciduous forests is ________.

  1. Sal

  2. Rosewood

  3. Teak

  4. Deodar


Correct Option: B
Explanation:
The most dominant species of trees found in the tropical deciduous forests is Rosewood.

Tropical Deciduous Forests,
They encompass a mixture of trees and grass.
They receive moderate rainfall, averaging to 100 cm to 200 cm per year with the average temperature 27-degree Celcius and the humidity level approximating to a 65-75 percent.
They grew plentifully in the Western Ghats (on the eastern sides), the Chota Nagpur plateau as well as the Shivalik mountain range.
They are also found in the Andaman and Nicobar Islands as well as parts of West Bengal and Orissa.
It is relatively easy to take advantage of these forests due to their high degree of gregariousness.
A few species of trees include teak, sal, bamboo as well as rosewood.
In this type of forest, open grass patches are often observed.

Tropical Deciduous forest receives rainfall between ________.

  1. 70cm to 100cm.

  2. 100cm to 200cm.

  3. 60cm to 100cm

  4. 50cm.


Correct Option: B
Explanation:
Tropical deciduous forest,
They encompass a mixture of trees and grass.
They receive moderate rainfall, averaging to 100 cm to 200 cm per year with the average temperature 27-degree Celcius and the humidity level approximating to a 65-75 percent.
They grew plentifully in the Western Ghats (on the eastern sides), the Chota Nagpur plateau as well as the Shivalik mountain range.
They are also found in the Andaman and Nicobar Islands as well as parts of West Bengal and Orissa.
It is relatively easy to take advantage of these forests due to their high degree of gregariousness.
A few species of trees include teak, sal, bamboo as well as rosewood.
In this type of forest, open grass patches are often observed.

The most dominant species of the tropical deciduous forest is _________.

  1. Bamboos.

  2. Teak

  3. Shisham

  4. Sandalwood.


Correct Option: B
Explanation:

Tropical deciduous forests are also known as "Monsoon" forests. These forests are found in the regions which receive the annual rainfall between 200 cm and 70 cm.

Trees of this forest type shed their leaves for about six to eight weeks in dry summers. Teak is the most dominant species of the tropical deciduous forests. Other commercially important species of this forest are Bamboo, Sal, Shisham, Sandalwood, Kusum, Arjun, Khair, Mulberry, Peepal, Neem, etc.

Montane forests are found in ________.

  1. Ganga-Brahmaputra delta.

  2. North-east India.

  3. Eastern slope of western ghats.

  4. Eastern ghats.


Correct Option: B
Explanation:

North-East India,

Mountain forests in India are normally classified into two types, i.e. the northern mountain forests and the southern mountain forests. Northern montane forests are found in North-East India. Deciduous forests are found in the foothills of the Himalayas. Temperate forests found between an altitude of 1,000 and 2,000 m.

The percentage of mangrove forest is _________.

  1. less than 1%

  2. less than 3% 

  3. less than 2%

  4. less than 4%


Correct Option: A
Explanation:

Recent data available from State of Forest Report 2011 of the Forest Survey of India, Dehra Dun shows that mangrove cover in the country is 4,662.56 sq.km, which is 0.14 percent of the country's total geographical area.

Cinchona trees are found in the _______.

  1. Equatorial climate

  2. Mediterranean climate

  3. Monsoon climate

  4. Taiga climate


Correct Option: A
Explanation:

Cinchona is a genus of flowering plants in the family Rubiaceae containing at least 23 species of trees and shrubs. They are native to the tropical Andean forests of Western South America.

Equatorial climate,
A tropical rainforest climate is a tropical climate usually found within 10 to 15 degrees latitude of the equator and has at least 60 mm (2.4 inches) of rainfall every month of the year. Regions with this climate are typically designated Af by the Köppen climate classification.

My stems are succulent, my leaves are mostly thick. In which category of the following vegetation type I am largely found?

  1. Tropical deciduous forest

  2. Montane forest

  3. Tropical thorn forest and scrubs

  4. Mangrove forest


Correct Option: C
Explanation:

Tropical thorn forests and scrubs are found in the regions with less than 70cm of rainfall. The natural vegetation consists of thorny trees and bushes. Trees are scattered and have long roots penetrating deep into the soil to get moisture. The stems are succulent to conserve water. Leaves are mostly thick and small to minimize evaporation.

Natural vegetation of a region depends mainly on climate and hence there are distinctive areas of different types of vegetation. The governing factors in general are temperature and precipitation. Accordingly, pine forests in India are found in _______.

  1. The Sunderbans

  2. The Thar desert

  3. The Himalayas

  4. The Ganga plain


Correct Option: C
Explanation:
Natural vegetation of a region depends mainly on climate and hence there are distinctive areas of different types of vegetation. The governing factors in general are temperature and precipitation. Accordingly, pine forests in India are found in The Himalayas.

Cinchona trees are found in the areas of rainfall more than ______.

  1. 100 cm

  2. 20 cm

  3. 170 cm

  4. less than 50 cm

  5. None of these


Correct Option: A
Explanation:
Cinchona trees when fully grown often reach to 50 cm to 100 cm. These trees are present in South America. There are 23 species of Cinchona. It produces very showy and beautiful purple, pink and colored petals. The bark of this tree is very beneficial and it is being used in various fields. For example, it is being used as a cure for malaria.

Which one of the following states is famous for sandal wood ?

  1. Andhra Pradesh

  2. Kerala

  3. Karnataka

  4. Tamil Nadu


Correct Option: C
Explanation:

Karnataka,

Not surprisingly, India dominates production worldwide. Nearly 85% of the supply of Indian sandalwood comes from the southern states of Karnataka, Tamil Nadu, and Kerala. But this statistic masks a crisis of illegal smuggling that the Indian sandalwood industry has been in the grip of for the past decades.

Railway coaches are made from _________.

  1. Shisham

  2. Deodar

  3. Teak

  4. Pine


Correct Option: B
Explanation:

  • Deodar gives yellowish brown wood. These trees are usually found in Himalayas, Punjab and Uttar Pradesh. It is the most important timber tree providing very soft wood.
  • It is used for making cheap furniture, railway carriages, railway sleepers, packing boxes, etc.

The dominant vegetation type of India is ________.

  1. Tropical deciduous type

  2. Equatorial type

  3. Mangrove forest

  4. Xerophytic vegetation


Correct Option: A
Explanation:

The indian deciduous forests are the most abundantly found among all the different types of forests in india . The indian deciduous are found in a range of landscape from the plains to the hills .

Mangrove forests grow in ________.

  1. Saline water

  2. River water

  3. Deserts

  4. Mountains


Correct Option: A
Explanation:

  • Mangrove forests comprise of small shrubs or trees that grow in coastal saline or brackish waters. These shrubs or trees can withstand high salinity conditions.
  • Mangrove forests of Sunderbans are largest mangrove forests of the world. Sundarbans are located in Ganga-Brahmaputra delta of West Bengal and Bangladesh.

Thorny bushes are found in __________________.

  1. Hot and humid tropical climate

  2. Hot and dry desertic climate

  3. Cold polar climate

  4. None of these


Correct Option: B
Explanation:

Thorny bushes are found in dry and hot subtropical areas with seasonal rainfall as low as 500 millimeters.The rainfall is very low and therefore these areas are usually deserts. The bushes shed their leaves seasonally to avoid loss of water.

The forest type occurring in lower regions near the equator and tropics is ______.

  1. Softwood coniferous forest

  2. Temperate deciduous forest

  3. Tropical evergreen forest

  4. Alpine forest


Correct Option: C
Explanation:

  • Tropical evergreen forests are the forests consisting of evergreen trees with green foliage throughout year. These are tropical forests.
  • They constitute 7% of earth’s dry land area and 2% of total surface. Such forest give shelter to 50% of world’s species.

What is the other name of tropical deciduous forests?

  1. Monsoon Forests

  2. Temperate deciduous forests

  3. Tropical rainforests

  4. None of these


Correct Option: A

What is the other name of tropical evergreen forests?

  1. Temperate rainforests

  2. Deciduous

  3. Tropical rainforests

  4. None of these


Correct Option: C
Explanation:

Tropical evergreen forests are closed canopy forests growing within 28 degrees north or south of the equator. Since they receive more than 200 cm rainfall per year, therefore they are also known as rain-forests

Anaconda, one of the world's largest snakes, is found in _____.

  1. Lowland forests

  2. Tropical rainforest

  3. Coniferous forests

  4. None of these


Correct Option: B

In tropical evergreen forest, one of the common animals is.

  1. Monkey

  2. Girraffe

  3. Camel

  4. Donkey


Correct Option: A
Explanation:

The monkeys tend to live in forest regions where they have lots of trees around them. Other than tropical evergreen forests,they are also abundant in mangrove forests,Savannahs and mountain regions

The finest cricket bats are made from the wood of the trees known as __________.

  1. billow

  2. seesam

  3. willow

  4. none of these


Correct Option: C
Explanation:

Kashimiri willows are known for their finest quality bats. Most of them are of international standards and are used by prominent cricketers worldwide. This willow was brought in India by British

Wood of softwood evergreen trees is very useful for making pulp, which is used for manufacturing.

  1. silk and wool

  2. meat and curd

  3. clothes and tyres

  4. paper and newsprint


Correct Option: D
Explanation:

Softwoods are cheaper and easier to work with than hardwoods. They are mainly used for- pulp for paper, durable home woodwork, and construction timbers.

Mahogany and rosewood trees are found in ________________.

  1. mangrove forests

  2. tropical deciduous forests

  3. tropical evergreen forests

  4. temperate deciduous forests


Correct Option: C
Explanation:

Tropical evergreen forest,

In India, Evergreen forests which are also identified as Tropical rain forest can be located in the in States such as Kerala and Karnataka. These forests are discovered in the westward slopes of the western ghats. They can be also discovered in mountain ranges of Jaintia and Khasi. Some of the trees which can be located in Indian Tropical Forests are ebony, bamboos rosewood, and reeds. 

Match list I (Forest types) with list II (Type of trees):


A. Tropical Evergreen  I. * Oak, pine, eucalyptus
B. Temperate Evergreen II. Oak, ash, beech
C. Tropical Deciduous III. Rosewood, ebony, mahogany
D. Temperate Deciduous  IV. Sal, teak, shisham


Which of the following is the correct matching?

  1. (A-II), (B-IV), (C-Ill), (D-I)

  2. (A-IV), (B-II), (C-I), (D-Ill)

  3. (A-I), (B-Ill), (C-II), (D-IV)

  4. (A-Ill), (B-1), (C-IV), (D-II)


Correct Option: D
Explanation:

Tropical evergreen - Rosewood, ebony, mahogany - Hardwood trees. 

Temperate evergreen - Oak, pine, eucalyptus - Coniferous and broad-leaved.
Tropical deciduous - Sal, teak, shisham - Drop the foliage.  
Temperate deciduous - Oak, ash, beech - Coniferous.

_______________ and __________ are trees found in the Sunderbans.

  1. Sundari, Mangrove

  2. Sundari, Sea forest

  3. Mangrove, Sea forest

  4. None of the above


Correct Option: A
Explanation:

  • Mangrove forest comprises of small shrubs or trees that grown in coastal saline or brackish waters. These shrubs or trees can withstand high salinity conditions. One of the example is Sundari tree after which name Sundarbans was given to this forests.
  • Mangrove forests of Sundarbans are largest mangrove forests of the world. Sundarbans are located in Ganga-Brahmaputra delta of west Bengal and Bangladesh.

Tropical rain forests are found in the areas where rainfall is between __________.

  1. 200 cm to 70 cm

  2. Between 200 and 100 cm

  3. 200 cm and above

  4. Between 100 cm and 70 cm


Correct Option: C
Explanation:

  • Tropical rain forests can be considered as hot and wet forests. Mean monthly temperatures exceed 18 °C and average annual rainfall is above 200 cms.
  • Tropical rainforests exhibit high levels of biodiversity. Around 40% to 75% of all biotic species are indigenous to the rainforests.
  • These forests are found in Andaman and Nicobar Islands and Western Ghats. A part of these forests are also found in Odisha state.

How many plant species are found in India?

  1. About 45,000

  2. About 40,000

  3. About 47,000

  4. About 20,000


Correct Option: C
Explanation:

India has 10 biogeographical zones and has 6 types of natural habitats. Over 47,000 species of plants and 89,000 species of animals have been recorded in India.

Regions such as Southeastern Brazil, Southwestern Africa, Myanmar and Bangladesh consists of _____.

  1. Tropical monsoon forests

  2. Tropical rainforests

  3. Coniferous rainforests

  4. Temperate deciduous forests


Correct Option: A
Explanation:

Tropical Monsoon forests are located in the monsoon climate beyond the equatorial region between 10°C and 25°C  and North and South of the equator. The countries are along the coastal regions of Bangladesh, Myanmar, Southwestern Africa, Southeastern Brazil, Srilanka. 

Silver Fir is found in _____ type of vegetation.

  1. Mangrove forests

  2. Montane forests

  3. Tropical Deciduous forests

  4. Tropical Evergreen forests


Correct Option: B
Explanation:

Silver Fir is found in Montane Forests. Montane Forests have a succession of natural vegetation belts in the same order from the tropical to the Tundra region. Between 1500 and 3000 metres, temperature forests contains coniferous tress like pine, deodar, silver fir.

Cinchona, rubber, mahogany, ebony are important trees of____________.

  1. Mangrove forests

  2. Tropical deciduous trees

  3. Tropical rainforests

  4. Montane forests


Correct Option: C
Explanation:

The tropical rainforests are confined to areas of heavy rainfall. Areas which receive more than 200 cm of rainfall and have a short dry season are the best area for tropical rainforest. Almost all kinds of vegetation, like trees, shrubs and creepers, are found in such a forest. Ebony, mahogany, rosewood, rubber, and cinchona are some of the commercially important trees of tropical rainforests.

Trees that do not shed their leaves are mostly found in _____________.

    1. Hot desert vegetation

    2. Tropical monsoon forests

    3. Coniferous forests

    4. Temperate deciduous forests


    Correct Option: C
    Explanation:

    Coniferous forests are found in the regions near the equator and close to the tropics.  Coniferous forests are made up mainly of cone-bearing or coniferous tress. The leaves of these trees are either small and needle-like or scale-like and most stay green all year around(evergreen). All are softwoods and are able to survive cold temperatures and acidic soil. Hence the tress in the coniferous forests do not shed their leaves altogether. 

    Famous mountain forest is _____ mountain forest.

    1. Brown

    2. Red

    3. White

    4. Grey


    Correct Option: A
    Explanation:

    The Brown Mountain forest is located in East Gippsland, Victoria(Australia), and it is famous as it is notable for containing large tracts of old growth forest, including over fifty shining gum trees estimated to be over 300 years old.

    Trees of mountain forest are ________.

    1. large and old

    2. small

    3. sharp

    4. none of these


    Correct Option: A
    Explanation:

    Mountain forests consist of trees that aren't found in low-lying areas. The trees have adapted to the cool climate, heavy downpours and intense sunshine. In low-lying areas, they are squeezed out by different tree species. Hence trees of mountain forest are large and old.

    The Himalayan range is considered as the worlds highest mountain range, with its tallest peak ________ on the Nepal China border.

    1. Hindu Kush

    2. Mt. Everest

    3. Tirich Mir

    4. Kunlun


    Correct Option: B
    Explanation:

    Mt.Everesst
    Reaching 29,029 feet (8,848 meters) above sea level, Mount Everest is the highest mountain on Earth. Located in the Mahalangur section of the Himalayas, the mountain's summit straddles the border separating China and Nepal.

    Which of the following areas is noted for mangrove vegetation?

    1. Corbett National Park of U.P.

    2. Sajnekhali forest of 24 Parganas

    3. Lava forest of Kalimpong

    4. Dandakaranya forest of Orissa


    Correct Option: B

    The leaves of the desert plants are ______.

    1. Pointed in shape

    2. Small sized and thorny

    3. Long

    4. Broad


    Correct Option: B
    Explanation:

    Small sized and thorny
    Little leaves — Most desert plants have small leaves, spikes for leaves, or no leaves at all. The smaller or fewer leaves a plant has, the less water is lost during transpiration since it has less surface area open to the sun and wind.

    What type of trees are found in the tropical monsoon region?

    1. Broad leaf deciduous trees

    2. Evergreen trees

    3. Conifers

    4. Thorny bushes


    Correct Option: A
    Explanation:

    Broad leaf deciduous trees
    The Monsoon forest may include deciduous trees, as well as, broadleaf evergreen trees reflecting the seasonal precipitation of the monsoon climate. The trees of the Monsoon Forest have a more open canopy than the rain forest, creating a dense, closed forest at the floor, or what we think of as a "tropical jungle".

    The Sundarbans or the "Mangrove" forests are found in___________.

    1. Konkan Coast

    2. Kutch Peninsula

    3. Deltaic West Bengal

    4. Western Ghats


    Correct Option: C
    Explanation:

    The Sundarbans mangrove forest, is one of the largest forest in the world which lies on the delta of the Ganges, Brahmaputra and Meghna rivers on the Bay of Bengal. It is shared between the countries of India and Bangladesh. Fourty percent of the area falls in the Indian region and sixty percent in the Bangladesh region.

    The evergreen forests are normally found in areas which get more than ____________ cms. of annual rainfall.

    1. 100

    2. 150

    3. 200

    4. 250


    Correct Option: D
    Explanation:

    The evergreen forests are normally found in areas which get more than 250 cms. of annual rainfall.

    _______ is the largest mangrove forest in the world.

    1. Pichavaram

    2. Pitara

    3. Sundarbans

    4. Bhitarkanika


    Correct Option: C
    Explanation:
    Sundarbans
    The Sundarbans is the largest mangrove forest in the world, located in the Ganges River delta in Bangladesh and West Bengal, India. The Pichavaram mangroves in Tamil Nadu is India's other one of the largest mangrove forests.

    Mangrove forests are called tidal forests because _________________.

    1. They are found along the deltas

    2. They are found at the estuaries

    3. They are found in non-tidal regions

    4. They are formed due to tides


    Correct Option: D
    Explanation:
    They are formed due to tides,

    Tidal or Mangrove forests:
    Tidal forests grow near the estuaries or the deltas of rivers, swampy margins of Islands and along sea coasts. The soil is formed of silt, silt-loam or silt-clay and sand. The plants are typical halophytes which are characterised by presence of prop roots with well developed knees for support and pneumatophores and viviparous germination of seeds.

    Tidal forests one distinguished into the following four types with overlapping constituent species:

    (i) Tree mangrove forests

    (ii) Low mangrove forests,

    (iii) Salt water forests and

    (iv) Brackish water forests.

    _________ trees grow in Sunderban forest.

    1. Babool

    2. Seesum

    3. Sundari

    4. Sabai


    Correct Option: C
    Explanation:

    Sundari,

    Sundarban Jungle has been named after the large mangrove trees Sundari (Heritiera littoralis). Sundarbans Tiger Reserve is estimated to have 400 majestic and fiery Royal Bengal Tigers.

    In tropical evergreen forest, one of the common animals is ______.

    1. Monkey

    2. Girraffe

    3. Camel

    4. Polar bear


    Correct Option: A
    Explanation:

    Tropical evergreen forests can be moist, in the case of rainforests, or drier with seasonal rain. Both types of tropical evergreen forests have many species of animals. Rainforest animals include monkeys, parrots, smaller animals and large numbers of insects.

    The Himalayas have ________ forests.

    1. Evergreen

    2. Alpine

    3. Deciduous

    4. Tropical


    Correct Option: B
    Explanation:

    Alphine,

    The alpine shrub and meadows lie between approximately 4,000 and 5,500 metres (13,100 and 18,000 ft) elevation. The Eastern Himalayan subalpine conifer forests lie below 3,000 metres (9,800 ft) along the southern slopes of the range, from Central Nepal to Bhutan.

    The Monsoon forests are otherwise called as _________.

    1. Tropical evergreen forest

    2. Tropical Deciduous forest

    3. Mangrove forest

    4. Mountain forest


    Correct Option: B
    Explanation:
    The Monsoon forests are otherwise called Monsoon forest, also called dry forest or tropical deciduous forest, open woodland in tropical areas that have a long dry season followed by a season of heavy rainfall. The trees in a monsoon forest usually shed their leaves during the dry season and come into leaf at the start of the rainy season.

    Teak and Ebony belong to ______.

    1. Tropical evergreen forest

    2. Tropical decidious forest

    3. Mangrove forest

    4. Hill forest


    Correct Option: A
    Explanation:

    "Teak and ebony" belong to the Tropical evergreen forest. Tropical evergreen forests stay green throughout the year with every green tree such as conifers, live oak, etc. These forests develop in the 200 cm of rainfall

    Which of the following is not a species of tropical moist deciduous forests?

    1. Mahogany

    2. Sal

    3. Shisham

    4. Teak


    Correct Option: A
    Explanation:
    Moist Deciduous Forests
    They encompass a mixture of trees and grass.
    They receive moderate rainfall, averaging to 100 cm to 200 cm per year with the average temperature 27-degree Celcius and the humidity level approximating to a 65-75 percent.
    They grew plentifully in the Western Ghats (on the eastern sides), the Chota Nagpur plateau as well as the Shivalik mountain range.
    They are also found in the Andaman and Nicobar Islands as well as parts of West Bengal and Orissa.
    It is relatively easy to take advantage of these forests due to their high degree of gregariousness.
    A few species of trees include teak, sal, bamboo as well as rosewood.
    In this type of forest, open grass patches are often observed.

    Which one among the following types of forests exhibits highest bio-diversity?

    1. Dry deciduous forest

    2. Tropical rainforest

    3. Moist deciduous forest

    4. Mangrove forest


    Correct Option: B
    Explanation:

    Tropical rainforest,

    Tropical rain forest types of forests exhibits highest bio-diversity. Tropical rainforests are known for their extreme biodiversity, posing a challenging problem in tropical ecology. A rain forest is simply an area of tall, mostly evergreen trees and a high amount of rainfall.

    Moist tropical evergreen forests are found in ___________.

    1. The Shillong plateau

    2. The Siwaliks

    3. The Deccan plateau

    4. Southern India


    Correct Option: A
    Explanation:

    The Shillong plateau,

    Moist tropical evergreen forests are found in The Shillong plateau. Tropical evergreen forests in our country are found mainly in the rainy tracts of the Sahyadris and the hill regions of the Shillong plateau.

    The Himalayan forests include _________.

    1. European Oak Forests

    2. Coniferous Forests

    3. Alpine Vegetation

    4. All the three


    Correct Option: D
    Explanation:

    The Himalayas consist of a mosaic of diverse forest ecosystems and ecoregions, with different forest types suited for distinct elevation bands. Ths with the variation in the altitude, we have different types o forests in the Himalayas viz. European Oak forests, Coniferous forests and Alpine vegetation as well.

    The mangrove forests are present in ________.

    1. the Eastern Ghats

    2. the Sunderbans

    3. the Western Ghats

    4. the Aravallis


    Correct Option: B
    Explanation:

    The Sunderbans
    Covering approximately 10,000 km2 the Sundarbans in the Northern Bay of Bengal is the largest contiguous mangrove forest on earth. Mangroves forests are highly productive and diverse ecosystems, providing a wide range of direct ecosystem services for resident populations. In addition, mangroves function as a buffer against frequently occurring cyclones; helping to protect local settlements including the two most populous cities of the world, Kolkata, and Dhaka, against their worst effects. While large tracts of the Indian Sundarbans were cleared, drained and reclaimed for cultivation during the British colonial era, the remaining parts have been under various protection regimes since the 1970s, primarily to protect the remaining population of Bengal tigers (Panthera tigris ssp. Tigris). 

    Which of the following regions has almost all prevalent types of natural vegetation in India?

    1. The Coastal Plains

    2. The Deccan Plateau

    3. The Himalayas

    4. The Ganga Plain


    Correct Option: C

    Assertion (A): The Himalayan ranges show change in vegetation from tropical to Tundra.
    Reason (R): In mountainous area with increase in altitude there is corresponding decrease in temperature, which leads to change in vegetation types.
    Select the correct option from the given alternatives.

    1. Both (A) and (R) are true and (R) explains (A)

    2. Both (A..) and (R) are true but (R) does not explain (A)

    3. (A) is true and (R) is false

    4. (A) is false and (R) is true


    Correct Option: A
    Explanation:

    The character and extent of vegetation are mainly determined by temperature along with the humidity in the air, precipitation and soil. On the slopes of Himalayas and the hills of Peninsula above the height of 915 metres, the fall in the temperature affects the types of vegetation and its growth, and changes it from tropical to subtropical temperature. So in the mountainous area with the increase in altitude there is corresponding decrease in temperature, which leads to change in vegetation types. 

    How much of the world's land area is tropical rainforest? 

    1. 2%

    2. 5%

    3. 7%

    4. 9%


    Correct Option: C
    Explanation:

    Tropical rainforests are the forests consisting of evergreen trees with green foliage throughout year. They constitute 6 to 7% of earth’s land surface. Such forest give shelter to 50% of world’s species.

    The greatest diversity of animal and plant species occurs in ________________.

    1. temperature deciduous forests

    2. tropical moist forests

    3. heavily polluted rivers

    4. deserts and savannas


    Correct Option: B
    Explanation:
     Tropical rainforests are areas of extremely high biodiversity compared to other ecosystems. Biologists estimate that tropical rainforests contain about 50% of the world's terrestrial plant and animal species, yet they encompass only about 6% of the world's land area.

    My stem is succulent, my leaves are mostly thick.
    In which category of the following vegetation type I am largely found?

    1. Tropical deciduous forest

    2. Montane forest

    3. Tropical thorn forest and scrubs

    4. Mangrove forest


    Correct Option: C
    Explanation:

    Stems are succulent and leaves are mostly thick. This means that the vegetation is found in the area of Tropical thorn forests and scrubs. This is an adaptation which turn leaves thick and succulent to prevent water loss from transpiration. 

    Plants in Desert are ________.

    1. Tall grasses

    2. Perennial Xerophytic shrubs

    3. Dwarf trees

    4. Water storing plants


    Correct Option: B

    Acacias, palms, euphorbia and cacti are plants common in the ______.

    1. Thorn forest.

    2. Tropical deciduous forest.

    3. Mangrove forest.

    4. Montane forest.


    Correct Option: A
    Explanation:
    The Thorn Forests and Scrubs
    In regions with less than 70 cm of rainfall, the natural vegetation of India consists of thorny trees and bushes. This type of vegetation is found in the north-western part of the country including semi-arid areas of Gujarat, Rajasthan, Madhya Pradesh, Chhattisgarh, Uttar Pradesh and Haryana. Acacias, palms, euphorbias and cacti are the main plant species. Trees are scattered and have long roots penetrating deep into the soil in order to get moisture.

    Which one of the following types of vegetation has commercially important trees like ebony, mahogany, rosewood and rubber?

    1. Montane Forest

    2. Tropical Rain Forests

    3. Tropical Deciduous Forests

    4. Tropical Thorn Forest.


    Correct Option: B
    Explanation:

    Tropical Rain Forests grows in areas where rainfall is more than 200 cm. Trees in these forests never shed their leaves at all any time in any part of the year. Trees in these belts have dense growth. Important varieties of tress are mahogony, rubber, rosewood, sisthu.

    Which one of the following types of vegetation does rubber belong to?

    1. Tundra

    2. Tidal

    3. Himalayan

    4. Tropical evergreen.


    Correct Option: D
    Explanation:

    The tropical evergreen forests usually occur in areas receiving more than 200 cm of rainfall. Semi evergreen forests lies on the dry sides of evergreen forests in Western Ghats, West Bengal, Odisha and other North-Eastern regions of India. The trees in this vegetation are hard wooded, and grow close to each other. Rubber belongs to semi-evergreen forests. Bamboo, ebony and rubber are important vegetation of this region.

    Which one of the following state does not have the Tropical deciduous forests?

    1. Jharkhand

    2. Western Orissa

    3. Chhattisgarh

    4. Rajasthan.


    Correct Option: D
    Explanation:

    Tropical deciduous forests are found in the regions that get 100 to 200 centimeters of rainfall per year. They extend from the Shivalik ranges in the North to the eastern flanks of the western ghats in peninsular India. Whereas Rajasthan consists of Thorn forests. Thorn forests are found in dry and arid regions where annual rainfall is less than 80 centimeters.

    Which of the following trees is used for treating blood pressure?

    1. Jamun

    2. Kachnar

    3. Neem

    4. snakeroot.


    Correct Option: D
    Explanation:
    Indian snakeroot has been used in traditional Ayurvedic medicine in India, mainly for high blood pressure and mental illness. Also, one of the chemicals in Indian snakeroot is the same as a prescription drug called reserpine. Reserpine has been used to treat mild to moderate high blood pressure, schizophrenia, and some symptoms of poor circulation.

    Forests made of trees that shed leaves as temperature decreases are classified as ___________.

    1. Hot desert vegetation

    2. Tropical monsoon forests

    3. Coniferous forests

    4. Temperate deciduous forests


    Correct Option: D
    Explanation:

    Temperate deciduous forests or temperate broad-leaf forests are dominated by trees that lose their leaves each year. Temperate deciduous forests are located in the mid-latitude areas which means that they are found between the polar regions and the tropics. The deciduous forest regions are exposed to warm and cold air masses, which cause this area to have four seasons. The temperature varies widely from season to season with cold winters and hot, wet summers.  When temperature decreases, trees change color and then lose their leaves. This is in preparation for the winter season. Because it gets so cold, the trees have adapted to the winter by going into a period of dormancy or sleep.

    ________ type of vegetation found in the desert areas.

    1. Tall grass

    2. Thorny shrubs

    3. Trees with conical leaves

    4. Trees with wide leaves


    Correct Option: B
    Explanation:

    Thorny shrubs,

    Cactus is the most common type of plant or shrub found in nearly all the deserts of the world. Desert biome is classified into 4 types, viz., Coastal desert, cold desert, semiarid desert, and hot and dry desert. The type of vegetation found differs according to the type of desert.

    Deltas, estuaries and beaches in coastal areas have peculiar type of vegetation that has aerial roots and can grow in salty water. This is called ________________.

    1. Mangrove vegetation

    2. Evergreen vegetation

    3. Shola forest

    4. Mixed vegetation


    Correct Option: A
    Explanation:

    Deltas, estuaries and beaches in coastal areas have peculiar type of vegetation that has aerial roots and can grow in salty water. This is called Mangrove vegetation.

    Littoral forests occurs _____________.

    1. on hills

    2. along the sea coasts and tidal creeks

    3. where the rainfall is heavy

    4. at elevated places


    Correct Option: B
    Explanation:
    Along the sea coasts and tidal creeks
    Littoral and Swamp Forests:
    The littoral and swamp forests occur along the sea coasts and creeks. Although their comparative extent in the State/Country is marginal, these forests are important for the protection of seacoast and marine life.
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