Natural Vegetation and Wild Life Test

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Natural Vegetation and Wild Life Test - 1

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Weekly Quiz Competition

Question 1
1 / -0

Which of the following statements is/are correct?

a. There are approx. 47,000 flowering plants in India.
b. There are approx. 90,000 species of animals in India.
c. India occupies tenth place in the world and fourth in Asia in plant diversity.

A
a, b and c

B
a and b

C
a and c

D
b and c

E
only c

Solution

There are approx. 47,000 plant species in India and of these, 15,000 are flowering plants. India has nearly 90,000 types of animals including over 350 mammals, 1,200 bird species. India ranks fourth in Asia and tenth in the world in plant diversity.
Question 2
1 / -0

Which of the following are not a part of natural vegetation?

a. Forests
b. Orchards
c. Cultivated crops

A
a, b and c

B
a and b

C
a and c

D
b and c

E
only c

Solution

Natural vegetation refers to a plant community which has grown naturally without human aid and has been left undisturbed by humans for a long time. Thus, cultivated crops and fruit orchards are a part of vegetation but not natural vegetation.
Question 3
1 / -0

Which of the following factors affect the variations found in photoperiod?

a. Latitude
b. Altitude
c. Season
d. Temperature

A
a, b, c and d

B
a, b and c

C
a, b and d

D
a, c and d

E
b, c and d

Solution

Natural photoperiod is greatly influenced by latitude, altitude, season and duration of the day. Near the equator, there is little variation in photoperiod. However, at latitudes greater than 30° north and south, the range in photoperiod is much more pronounced. Increasing photoperiod to 16 h of light and 8 h of darkness from 12 h of light and 12 h of darkness increases milk yield by 8–10%. This response is associated with increased feed intake and increased plasma prolactin concentration and sometimes an increase in plasma IGF-I levels.
Question 4
1 / -0

Which of the following reasons best explains the statement 'the vegetation cover of India is no more natural in the real sense'?

A
Because the exotic plants have been added to the vegetation

B
Because the endemic species are threatened

C
Because much of the land has been taken over by cultivated crops

D
Because vegetation has been modified, replaced or degraded by human occupancy

E
None of these

Solution

This is the correct answer. Natural vegetation is the vegetation that has been left undisturbed by the humans for a long time. Additions in or replacement of natural vegetation of exotic species, crop cultivation and degradation by human occupancy can be said to be reasons behind the statement that 'the vegetation cover of India is no more natural in the real sense'.
Question 5
1 / -0

Which of the following reasons is/are valid for saying that forests are important for human beings?

A
They support industries and provide livelihood.

B
They control wind force and temperature and cause rainfall.

C
They are a non-renewable resource of the nation.

D
Both (1) and (2)

E
All of the above

Solution

The material that is derived from forests such as wood, plants, plant extracts etc. supports many industries, therefore forests are important for human beings. The forests regulate local and global weather through their absorption and creation of rainfall and their exchange of atmospheric gases. A forest is a mature ecosystem. It has trees of different sizes and ages, many other plants, and lots of animals. A forest is a renewable resource.
Question 6
1 / -0

Which of the following statements is/are correct about a biome?

A
A biome is a very large ecosystem on land having distinct types of vegetation and animal life.

B
A biome is identified on the basis of its wildlife.

C
Human beings are not considered a part of biome.

D
All interdependent and interrelated plants and animals in an area are considered a biome.

E
Both (1) and (2)

Solution

A biome is a community of plants and animals that have common characteristics for the environment they exist in. They can be found over a range of continents. Biomes are distinct biological communities that have formed in response to a shared physical climate. Humans are an integral part of ecosystems. Ecosystems provide a variety of benefits to people, including provisioning, regulating, cultural, and supporting services. Provisioning services are the products people obtain from ecosystems, such as food, fuel, fibre, fresh water, and genetic resources.
Question 7
1 / -0

Which of the following areas do(e)s not have tropical evergreen forests?

A
Western Ghats

B
Andaman and Nicobar and Lakshadweep island groups

C
Upper parts of Assam

D
Coromandel coast

E
Tamil Nadu coast

Solution

Tropical evergreen forests are dense, multi-layered, and harbour many types of plants and animals. These forests are found in the areas receiving heavy rainfall (more than 200 cm annual rainfall). Coromandel coast is a part of Eastern Ghats, which are lower than Western Ghats and also receive less rainfall. This area does not have tropical evergreen forests.
Question 8
1 / -0

Which of the following statements is/are incorrect?

a. Tropical evergreen forests have a multi-layered structure of vegetation.
b. Tropical evergreen forests grow in regions that are warm and wet throughout the year, with a short dry season.
c. The trees in tropical evergreen forests reach up to the height of 80 metres or even above.

A
Only a

B
Only b

C
Only c

D
a and b

E
b and c

Solution

Tropical evergreen forests are dense, multi-layered, and harbour many types of plants and animals. These forests are found in the areas receiving heavy rainfall (more than 200 cm annual rainfall). The trees in tropical evergreen forests reach up to the height of 60 metres or even above. Tropical evergreen forests grow where a monthly mean temperature of 20°C or higher in the coldest months.
Question 9
1 / -0

Which of the following types of forests are the most widespread in India?

A
Tropical evergreen forests

B
Tropical deciduous forests

C
Tropical thorn forests

D
Montane forests

E
Mangrove forests

Solution

These are the most widespread forests in India. They are also called the monsoon forests. They spread over regions which receive rainfall between 70-200 cm. On the basis of the availability of water, these forests are further divided into moist and dry deciduous.
Question 10
1 / -0

Thorn forests are found in the north-western part of the country. Which of the following trees is not a main plant species of thorn forests?

A
Acacia

B
Cactus

C
Palm

D
Bamboo

E
Euphorbia

Solution

A thorny forest is a dense, scrub-like vegetation characteristic of dry subtropical and warm temperate areas with a seasonal rainfall averaging 250 to 500 mm. This vegetation covers a large part of southwestern North America and southwestern Africa and smaller areas in Africa, South America, and Australia. Bamboo grows in dry deciduous forests. Acacia, Cactus and Palm are the main plant species found in thorn forests.
Question 11
1 / -0

Which of the following animals are found in thorn forests?

a. Rats
b. Rabbits
c. Foxes
d. Wild asses
e. Horses
f. Camels

A
a, b, c, d, e and f

B
a, c, d and f

C
a, b, d, e and f

D
a, d, e and f

E
b, d and f

Solution

The thorn forests and scrubs are found in regions with less than 70 cm of rainfall. These forests, thus, exist in the north-western part of the country including semi-arid regions of Gujarat, Rajasthan, Madhya Pradesh, Chhattisgarh, Uttar Pradesh and Haryana. The main plant species found in these forests are acacias, cacti, euphorbias and palms.Trees are scattered and have long roots penetrating deep into the soil in order to get moisture. The stems are succulent to conserve water. Leaves are mostly thick and small.The common animals found in these forests are rat, mice, rabbits, fox, wolf, tiger, lion, wild ass, horses and camels.
Question 12
1 / -0

Which of the following statements is/are correct?

a. Oaks and chestnuts predominate in montane forests between 1500 and 3000 metres.
b. At high altitudes such as 3600 metres above the sea level, temperate forests give way to grasslands.
c. Mosses and lichens form part of tundra vegetation at higher altitudes.

A
a only

B
b only

C
c only

D
b and c

E
a, b and c

Solution

Wet temperate type of forests are found between heights of 1000 and 2000 metres. Oaks and chestnuts are wet temperate trees. At high altitudes, generally more than 3600 metres above sea level, temperate forests and grasslands give way to the Alpine vegetation. At higher altitudes, mosses and lichens form part of tundra vegetation.
Question 13
1 / -0

Sundari trees provide durable hard timber. They are found in which of the following areas?

a. Ganga Brahmaputra delta
b. Mahanadi delta
c. Godavari delta

A
a, b and c

B
a and b

C
a only

D
b and c

E
a and c

Solution

In the Ganga- Brahmaputra delta, sundari trees are found, which provide durable hard timber. Palm, coconut, keora, agar, etc., also grow in some parts of the delta. Royal Bengal Tiger is the famous animal in these forests. Turtles, crocodiles, gharials and snakes are also found in these forests.
Question 14
1 / -0

Which of the following pairs is incorrectly matched?

A
Sarpgandha : Blood pressure

B
Jamun juice : Diuretic

C
Arjun leaves : Ear ache

D
Kachnar : Cough and cold

E
Babool leaves : Eye sores

Solution

Rauwolfia serpentina (Sarpagandha) has been reported to have the following medicinal properties: Vasodilator. This herb is known to reduce the tone of the blood vessels and therefore, reduces the blood pressure.
The diuretic effects of jamun flush toxins out of the kidneys, while the high fibre content aids in digestion and prevents nausea and vomiting. Several studies show that the high alkaloid content present in jamun is effective in controlling hyperglycaemia or high blood sugar.
The fresh juice of Arjun leaves is a cure for ear ache.
Kachnar is used to cure asthma and ulcers.
Question 15
1 / -0

The Gir Forest is the last remaining habitat of which of the following animals?

A
Leopards

B
Shaggy horned wild oxen

C
Ghariyal

D
Asiatic lion

E
Ibex

Solution

The Gir Forest is the last remaining habitat of the Asiatic lion. There are approximately 600 Asiatic lions left in the Gir Forest of Western India, their last remaining natural habitat.
Question 16
1 / -0

Which of the following biosphere reserves is not in the World Network of Biosphere Reserves?

A
The Sunderbans

B
Nanda Devi Reserve

C
Gulf of Mannar

D
Manas

E
Nilgiris

Solution

The World Network of Biosphere Reserves of the MAB Programme consists of a dynamic and interactive network of sites of excellence. Manas Bioreserve has not been included in the World Network of Biosphere Reserves. Gulf of Mannar in Tamil Nadu has been included in the World Network of Biosphere Reserves. Nanda Devi in Uttarakhand, The Sunderbans in West Bengal have been included in the World Network of Biosphere Reserves.

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Natural Vegetation and Wild Life Test - 1

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Natural Vegetation and Wild Life Test - 1

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Question 1

a, b and c

a and b

a and c

b and c

only c

Solution

Question 2

a, b and c

a and b

a and c

b and c

only c

Solution

Question 3

a, b, c and d

a, b and c

a, b and d

a, c and d

b, c and d

Solution

Question 4

Because the exotic plants have been added to the vegetation

Because the endemic species are threatened

Because much of the land has been taken over by cultivated crops

Because vegetation has been modified, replaced or degraded by human occupancy

None of these

Solution

Question 5

They support industries and provide livelihood.

They control wind force and temperature and cause rainfall.

They are a non-renewable resource of the nation.

Both (1) and (2)

All of the above

Solution

Question 6

A biome is a very large ecosystem on land having distinct types of vegetation and animal life.

A biome is identified on the basis of its wildlife.

Human beings are not considered a part of biome.

All interdependent and interrelated plants and animals in an area are considered a biome.

Both (1) and (2)

Solution

Question 7

Western Ghats

Andaman and Nicobar and Lakshadweep island groups

Upper parts of Assam

Coromandel coast

Tamil Nadu coast

Solution

Question 8

Only a

Only b

Only c

a and b

b and c

Solution

Question 9

Tropical evergreen forests

Tropical deciduous forests

Tropical thorn forests

Montane forests

Mangrove forests

Solution

Question 10

Acacia

Cactus

Palm

Bamboo

Euphorbia

Solution

Question 11

a, b, c, d, e and f