On account of the disruption in education due to the corona pandemic, we're are providing a 7-day Free trial of our platform to teachers. Know More →

UPSC

Explore popular questions from Biodiversity for UPSC. This collection covers Biodiversity previous year UPSC questions hand picked by experienced teachers.

Select Subject

Geography

Indian Polity and Governance

Economic and Social Development

Ecology, Biodiversity and Climate Change

Mental Ability and Management Ability

General Knowledge

General Science

Current Affairs

History

Biodiversity

Correct Marks 2

Incorrectly Marks -0.667

Q 1. A keystone species

has a disproportionately large impact on an ecosystem.

B

typically reduces overall diversity of an ecosystem.

C

is typically an herbivore.

D

is an example of amensalism.

Correct Marks 2

Incorrectly Marks -0.667

Q 2. Extinction of a weaker species by an aggressive alien species is the results of

Endemism of weaker species

B

Habitat loss

C

The Domino Effect

D

All of the above.

Correct Marks 2

Incorrectly Marks -0.667

Q 3. In the Lower Himalayan Mountains, several species of salamander, an amphibian, live in or near a stream. The largest species lives in the stream and along its edges, a smaller species lives on land within a meter or two of the stream, and a smaller species lives about 3-5 meters away from the stream. In this region, these three salamander species are using

different niches within the same habitat

B

the same niche and microhabitat

C

the same landscape but different ecosystems

D

the same habitat but different niches

Correct Marks 2

Incorrectly Marks -0.667

Q 4. Invasive species are dangerous because

A

they are almost all predators, disturbing ecological relationships by eating other species.

B

they carry viruses that spread disease in new ecosystems.

the native species have not evolved with these organisms.

D

they tend to be secretive, going unnoticed in their new ecosystems.

Correct Marks 2

Incorrectly Marks -0.667

Q 5. Protection and preservation of endangered species away from their natural habitat under human care in zoos, nurseries and laboratories is known as

A

In-situ conservation

B

Ex-situ conservation

C

Biodiversity conservation

None of the above

Correct Marks 2

Incorrectly Marks -0.667

Q 6. Protection of biodiversity around the world requires:

basic science to produce government policies and laws that then must be enforced.

B

changes to social structure and political organizations that drive basic science.

C

new technologies and techniques that are still being developed.

D

the introduction of new species into new regions to spread a species range.

Correct Marks 2

Incorrectly Marks -0.667

Q 7. Within biological communities, some species are important in determining the ability of a large number of other species to persist in the community. Such species are called

Keystone species

B

Allopatric species

C

Sympatric species

D

Threatened species

Correct Marks 2

Incorrectly Marks -0.667

Q 8. The diversity and productivity or coral reefs is most similar to that of

A

desert environments

B

a natural prairie.

tropic rain forests

D

a river system.

Correct Marks 2

Incorrectly Marks -0.667

Q 9. The risk of introducing a natural enemy to control an invasive species is that

A

it might drive the invasive species to extinction.

the natural enemy might also become a pest.

C

the natural enemy might evolve into a new species

D

the natural enemy may introduce genetic diversity into the invasive species.

Correct Marks 2

Incorrectly Marks -0.667

Q 10. Biodiversity is important because:

it is necessary to maintain ecosystems.

B

humans can use new sources of food.

C

without certain species, photosynthesis may not be possible.

D

certain species are necessary to provide oxygen in the atmosphere.

Correct Marks 2

Incorrectly Marks -0.667

Q 11. Compared to forests using sustainable forest management, commercial forests managed for maximum sustainable yield of commercially valuable species will

A

support more biological diversity.

B

be more resistant to pests.

C

produce a greater variety of wood.

have greater erosion problems.

Correct Marks 2

Incorrectly Marks -0.667

Q 12. Endemic species are:

A

secure groups that show the least risk of extinction.

limited to just one habitat.

C

widely distributed, found especially on large continents.

D

usually the dominant species within an ecosystem.

Correct Marks 2

Incorrectly Marks -0.667

Q 13. Which of the following represents the greatest conservation of the genetic bank?

A

the human genome center, analyzing the components of the human genome.

seed banks that store seeds of thousands of plants from around the world.

C

the field of proteomics, investigating the many ways the proteins function in organisms.

D

all of the varieties of corn wheat, and rice currently serving as crops.

Correct Marks 2

Incorrectly Marks -0.667

Q 14. Which one of the following groups of animals belongs to the category of endangered species ?

Great Indian Bustard, Musk Deer, Red Panda and Asiatic Wild Ass

B

Kashmir Stag, Cheetah Blue Bull and Great Indian Bustard

C

Snow Leopard, Swamp Deer, Rhesus Monkey and Saras (Crane)

D

Lion-tailed Macaque, Blue Bull, Hanuman Langur and Cheetal

Explanation

Red Panda and Asiatic Wild Ass are endangered species.

Correct Marks 2

Incorrectly Marks -0.667

Q 15. Which one of the following is included in the world list of biosphere reserves by UNESCO?

A

Kinnaur region

B

Spiti Valley

C

Nallamalai Hills

Sunderbans

Explanation

The Sundarbans is the largest single block of tidal halophytic mangrove forest in the world. The Sundarban forest lies in the vast delta on the Bay of Bengal formed by the super confluence of the Ganges, Padma, Brahmaputra and Meghna rivers across southern Bangladesh. It is a UNESCO World Heritage Site.

Correct Marks 2

Incorrectly Marks -0.667

Q 16. In which one of the following states is Ranganathittu Bird Sanctuary located?

A

Tamil Nadu

B

Kerala

Karnataka

D

Andhra Pradesh

Explanation

Ranganathittu Bird Sanctuary is located in Karnataka.

Correct Marks 2

Incorrectly Marks -0.667

Q 17. Which one of the following is the correct sequence of the given tiger reserves of India from North to South?

Dudwa-Kanha-Indravati-Bandipur

B

Kanha-Bandipur-Dudwa-Indravati

C

Indravati-Kanha-Dudwa-Bandipur

D

Dudwa-Kanha-Bandipur-Indravati

Explanation

1. Dudwa National park - Uttar Pradesh
2. Kanha National Park - Madhya Pradesh
3. Indravati National Park - Chattisgarh
4. Bandipur National Park - Karnataka

Correct Marks 2

Incorrectly Marks -0.667

Q 18. In wildlife conservation which one among the following best defines an ‘endemic species'?

A

When the critical number of a species declines in a forest due to parasitic attack

B

A species which is cosmopolitan and can be commonly found in biosphere

C

An endangered species which is found in a few restricted areas on the Earth

A species confined to a particular region and not found anywhere else

Explanation

An endemic species is one whose habitat is restricted to a particular area. The term could refer to an animal, a plant, a fungus, or even a microorganism. Some of the endemic species in India are Grey-headed Bulbul, Malabar Lark, Nilgiri Flycatcher and Grey Jungle fowl etc.

Correct Marks 2

Incorrectly Marks -0.667

Q 19. Veliconda hills, which is a part of Eastern Ghats, is situated in

A

Odisha

B

Tamil Nadu

C

Karnataka

Andhra Pradesh

Explanation

Veliconda Hills are situated in southeastern Andhra Pradesh state. They form the eastern flank of the Eastern Ghats.

Correct Marks 2

Incorrectly Marks -0.667

Q 20. Biodiversity is richer in

tropical regions

B

polar regions

C

temperate regions

D

oceans

Explanation

Biodiversity is richer in tropical regions. Biodiversity is a measure of the health of ecosystems. Greater biodiversity implies greater health. Biodiversity is in part a function of climate. In terrestrial habitats, tropical regions are typically rich whereas Polar Regions support fewer species.

Correct Marks 2

Incorrectly Marks -0.667

Q 21. Following arrangement is correct from the point of view of decreasing biodiversity in angiosperms (N), fungi (F), pteridophytes (P) and algae (A)

A

N>F>P>A

B

N>F>A>P

C

F>N>P>A

F>N>A>P

Correct Marks 2

Incorrectly Marks -0.667

Q 22. The number of plant species recorded from India, is

A

30,000

45,000

C

70,000

D

90,000

Correct Marks 2

Incorrectly Marks -0.667

Q 23. The Indian Rhinoceros is a natural inhabitant of which one of the Indian states?

A

Uttarakhand

B

Uttar Pradesh

C

Himachal Pradesh

Assam

Correct Marks 2

Incorrectly Marks -0.667

Q 24. Main reason behind the destruction of Biodiversity is :

A

Hunting

B

Soil erosion

C

Green house effect

Destruction of natural habitat

Correct Marks 2

Incorrectly Marks -0.667

Q 25. Project tiger was launched by the recommendation of Indian board of Wildlife (IBWL) in

A

1971

B

1975

1973

D

1972