Environment & Ecology – UPSC Prelims PYQs

385 questions · 1995–2026 · answers as per the UPSC key · page 7 of 8

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Topics: Protected Areas & Wildlife (53)Ecosystems & Ecology Concepts (50)Biodiversity & Conservation (49)International Environmental Treaties & Summits (42)Pollution & Waste Management (40)Environmental Governance & Legislation (37)Climate Change & Greenhouse Gases (35)Sustainable Agriculture & Forestry (32)Water & Wetland Conservation (21)Renewable Energy & Green Technologies (18)Biogeochemical Cycles & Earth Systems (8)

King Cobra is the only snake that makes its own nest. Why does it make its nest?

(a) It is a snake-eater and the nest helps attract other snakes
(b) It is a viviparous snake and needs a nest to give birth to its offspring
(c) It is an oviparous snake and lays its eggs in the nest and guards the nest until they are hatched
(d) It is a large, cold blooded animal, and needs a nest to hibernate in the cold season
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Answer: (c) It is an oviparous snake and lays its eggs in the nest and guards the nest until they are hatched

As a result of their annual survey, the National Geographic Society and an international polling firm GlobeScan gave India top rank in Greendex 2009 score. What is this score?

(a) It is a measure of efforts made by different countries in adopting technologies for reducing carbon footprint
(b) It is a measure of environmentally sustainable consumer behaviour in different countries
(c) It is an assessment of programmes/schemes undertaken by different countries for improving the conservation of natural resources
(d) It is an index showing the volume of carbon credits sold by different countries
Show answer
Answer: (b) It is a measure of environmentally sustainable consumer behaviour in different countries

Consider the following statements:

  1. The Taxus tree naturally found in the Himalayas.
  2. The Taxus tree is listed in the Red Data Book.
  3. A drug called “taxol” is obtained from Taxus tree is effective against Parkinson’s disease.

Which of the statements given above is/are correct?

(a) 1 only
(b) 1 and 2 only
(c) 2 and 3 only
(d) 1, 2 and 3
Show answer
Answer: (b) 1 and 2 only

What are the possible limitations of India in mitigating the global warming at present and in the immediate future ?

  1. Appropriate alternate technologies are not sufficiently available.
  2. India cannot invest huge funds in research and development.
  3. Many developed countries have already set up their polluting industries in India.

Which of the statements given above is/are correct ?

(a) 1 and 2 only
(b) 2 only
(c) 1 and 3 only
(d) 1, 2 and 3
Show answer
Answer: (a) 1 and 2 only

Consider the following which can be found in the ambient atmosphere :

  1. Soot
  2. Sulphur hexafluoride
  3. Water vapour

Which of the above contribute to the warming up of the atmosphere ?

(a) 1 and 2 only
(b) 3 only
(c) 2 and 3 only
(d) 1, 2 and 3
Show answer
Answer: (d) 1, 2 and 3

In India,

which one of the following States has the largest inland saline wetland?

(a) Gujarat
(b) Haryana
(c) Madhya Pradesh
(d) Rajasthan
Show answer
Answer: (d) Rajasthan

Which one of the following Union Ministries implements the Cartagena Protocol on Biosafety ?

(a) Ministry of Science and Technology
(b) Ministry of Health and Family Welfare
(c) Ministry of Environment and Forests
(d) Ministry of Chemicals and Fertilizers
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Answer: (c) Ministry of Environment and Forests

Where is the headquarters of Animal Welfare Board of India located ?

(a) Ahmedabad
(b) Chennai
(c) Hyderabad
(d) Kolkata
Show answer
Answer: (b) Chennai

In the context of CO₂ emission and Global Warming, what is the name of a market-driven device under the UNFCCC that allows developing countries to get funds/incentives from the developed countries to adopt better technologies that reduce greenhouse gas emissions ?

(a) Carbon Footprint
(b) Carbon Credit Rating
(c) Clean Development Mechanism
(d) Emission Reduction Norm
Show answer
Answer: (c) Clean Development Mechanism

The concept of carbon credit originated from which one of the following ?

(a) Earth Summit, Rio de Janeiro
(b) Kyoto Protocol
(c) Montreal Protocol
(d) G-8 Summit, Heiligendamm
Show answer
Answer: (b) Kyoto Protocol

The marine animal called dugong which is vulnerable to extinction is a/an

(a) Amphibian
(b) Bony fish
(c) Shark
(d) Mammal
Show answer
Answer: (d) Mammal

Consider the following names :

  1. Ike
  2. Kate
  3. Gustav

Which of the above are the names of hurricanes that had occurred very recently ?

(a) 1 and 2 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
Show answer
Answer: (c) 1 and 3 only

In the context of alternative sources of energy, ethanol as a viable bio-fuel can be obtained from

(a) Potato
(b) Rice
(c) Sugarcane
(d) Wheat
Show answer
Answer: (c) Sugarcane

Consider the following regions:

  1. Eastern Himalayas
  2. Eastern Mediterranean region
  3. North-western Australia

Which of the above is/are Biodiversity Hotspot(s)?

(a) 1 only
(b) 1 and 2 only
(c) 2 and 3 only
(d) 1, 2 and 3
Show answer
Answer: (b) 1 and 2 only

The Panda belongs to the same family as that of

(a) Bear
(b) Cat
(c) Dog
(d) Rabbit
Show answer
Answer: (a) Bear

Which one of the following Union Ministries is implementing the Biodiesel Mission (as Nodal Ministry)?

(a) Ministry of Agriculture
(b) Ministry of Science and Technology
(c) Ministry of New and Renewable Energy
(d) Ministry of Rural Development
Show answer
Answer: (d) Ministry of Rural Development

Consider the following:

  1. Rice fields
  2. Coal mining
  3. Domestic animals
  4. Wetlands

Which of the above are sources of methane, a major greenhouse gas?

(a) 1 and 4 only
(b) 2 and 3 only
(c) 1, 2 and 3 only
(d) 1, 2, 3 and 4
Show answer
Answer: (d) 1, 2, 3 and 4

Consider the following statements:

  1. Salt-water crocodile is found in the Andaman and Nicobar Islands.
  2. Shrew and tapir are found in the Western Ghats of the Malabar region.

Which of the statements given above is/are correct?

(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
Show answer
Answer: (a) 1 only

For which one of the following snakes is the diet mainly composed of other snakes?

(a) Krait
(b) Russell's viper
(c) Rattlesnake
(d) King cobra
Show answer
Answer: (d) King cobra

Out of all the Biosphere Reserves in India, four have been recognized on the World Network by UNESCO.

Which one of the following is not one of them?

(a) Gulf of Mannar
(b) Kanchenjunga
(c) Nanda Devi
(d) Sunderbans
Show answer
Answer: (b) Kanchenjunga

Where was the World Summit on Sustainable Development (Rio + 10) held?

(a) Davos
(b) Nova Scotia
(c) Johannesburg
(d) Shanghai
Show answer
Answer: (c) Johannesburg

Consider the following statements:

  1. Clean Development Mechanism (CDM) in respect of carbon credits is one of the Kyoto Protocol Mechanisms.
  2. Under the CDM, the projects handled pertain only to the Annex-I countries.

Which of the statements given above is/are correct?

(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
Show answer
Answer: (a) 1 only

The release

of which one of the following into ponds and wells helps in controlling the mosquitoes?

(a) Crab
(b) Dogfish
(c) Gambusia fish
(d) Snail
Show answer
Answer: (c) Gambusia fish

Which one among the following has the maximum number of National Parks?

(a) Andaman and Nicobar Islands
(b) Arunachal Pradesh
(c) Assam
(d) Meghalaya
Show answer
Answer: (a) Andaman and Nicobar Islands

Among the following, which one is not an ape?

(a) Gibbon
(b) Gorilla
(c) Langur
(d) Orangutan
Show answer
Answer: (c) Langur

Wangari Maathai, the Nobel Prize winner from Kenya, is known for her contribution to which one of the following?

(a) Journalism
(b) International economics
(c) Sustainable development
(d) Child development
Show answer
Answer: (c) Sustainable development

Which one of the following is also known as Top Slip?

(a) Simlipal National Park
(b) Periyar Wildlife Sanctuary
(c) Manjira Wildlife Sanctuary
(d) Indira Gandhi Wildlife Sanctuary and National Park
Show answer
Answer: (d) Indira Gandhi Wildlife Sanctuary and National Park

Which of the following is located in the Bastar region?

(a) Bandhavgarh National Park
(b) Dandeli Sanctuary
(c) Rajaji National Park
(d) Indravati National Park
Show answer
Answer: (d) Indravati National Park

The largest coral reef in the world is found near the coast of which one of the following countries?

(a) Australia
(b) Cuba
(c) Ghana
(d) Philippines
Show answer
Answer: (a) Australia

Dalbergia species is associated with which one of the following?

(a) Cashew-nut
(b) Coffee
(c) Tea
(d) Rosewood
Show answer
Answer: (d) Rosewood

Consider the following statements :

  1. In India, Red Panda is naturally found in the western Himalaya only.
  2. In India, Slow Loris lives in the dense forests of the North-East.

Which of the statements given above is/are correct?

(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
Show answer
Answer: (b) 2 only

Which one of the following countries is the first country in the world to propose a carbon tax for its people to address global warming?

(a) Australia
(b) Germany
(c) Japan
(d) New Zealand
Show answer
Answer: (d) New Zealand

Where is Bundala Biosphere Reserve which has been recently added to the UNESCO’s Man and Biosphere (MAB) network, located?

(a) Russia
(b) India
(c) Sri Lanka
(d) Bangladesh
Show answer
Answer: (c) Sri Lanka

Consider the following statements :

  1. Kyoto Protocol came into force in the year 2005
  2. Kyoto Protocol deals primarily with the depletion of the Ozone layer.
  3. Methane as a greenhouse gas is more harmful than carbon dioxide

Which of the statements given above is/are correct?

(a) 1 and 2
(b) 1 and 3
(c) 1 only
(d) 3 only
Show answer
Answer: (b) 1 and 3

Match List-I with List-II and select the correct answer using the codes given below the lists:

  1. Orissa
  2. Assam
  3. Chhattisgarh
  4. Goa
  5. Tripura

List I (National Park/Wild-life Sanctuary) (A) Bondla Wildlife Sanctuary (B) Kangerghat National Park (C) Orang Sanctuary (D) Ushakothi Wildlife Sanctuary

List II (State)

(a) A–2 B–4 C–5 D–1
(b) A–4 B–3 C–2 D–1
(c) A–2 B–3 C–5 D–4
(d) A–4 B–1 C–2 D–3
Show answer
Answer: (b) A–4 B–3 C–2 D–1

Which one of the following is not a Biosphere Reserve?

(a) Agasthyamalai
(b) Nallamalai
(c) Nilgiri
(d) Panchmarhi
Show answer
Answer: (b) Nallamalai

Virtual water trade is being looked at by experts as a solution to the world’s water crisis. What does virtual water (VW) imply?

(a) Volume of heavy water required to replace ordinary water.
(b) Volume of water required to produce a commodity or service.
(c) Volume of water saved by using rainwater harvesting.
(d) Volume of water utilized by an effective flood control.
Show answer
Answer: (b) Volume of water required to produce a commodity or service.

Consider the following statements:

  1. Silent Valley National Park is in the Nallamalai range.
  2. Pathrakkadavu Hydroelectric Project is proposed to be built near the Silent Valley National Park.
  3. The Kunthi river originates in Silent Valley’s rainforests.

Which of the statements given above is/are correct?

(a) 1 and 3
(b) 2 only
(c) 2 and 3
(d) 1, 2 and 3
Show answer
Answer: (c) 2 and 3

Which one of the following statements is correct?

(a) The First Meeting of the Parties (MOP-1) to the Cartagena Protocol on Biosafety was held in the Philippines in 2004.
(b) India is not a signatory to the Biosafety Protocol/Convention on Biological Diversity.
(c) The Biosafety Protocol deals with genetically modified organisms.
(d) The United States of America is a member of the Biosafety Protocol/Convention on Biological Diversity.
Show answer
Answer: (c) The Biosafety Protocol deals with genetically modified organisms.

Consider the following statements:

  1. The forest cover in India constitutes around 20 % of its geographical area. Out of the total forest cover, dense forest constitutes around 40 %.
  2. The National Forestry Action Programme aims at bringing one-third of the area of India under tree/forest cover.

Which of the statements given above is/are correct?

(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
Show answer
Answer: (b) 2 only

Consider the following statements:

  1. Toothless mammals such as pangolins are not found in India.
  2. Gibbon is the only ape found in India.

Which of these statements given above is/are correct?

(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
Show answer
Answer: (b) 2 only

Tarun Bharat Sangh, an organization based in a village near Alwar (Rajasthan) has become famous because of

(a) Cultivation of genetically modified cotton
(b) Rehabilitation of women victims of AIDS
(c) Livelihood projects for destitute rural women
(d) Rain-water harvesting
Show answer
Answer: (d) Rain-water harvesting

Match List I (National Park/Sanctuary) with List II (State) and select the correct answer using the codes given below:

  1. Chhattisgarh
  2. Haryana
  3. Himachal Pradesh
  4. Karnataka

List I (A) Kanger Ghati National Park (B) Nagerhole National Park (C) Kugti Wildlife Sanctuary (D) Sultanpur Bird Sanctuary

List II

Codes: ABCD

(a) 3 2 1 4
(b) 1 4 3 2
(c) 3 4 1 2
(d) 1 2 3 4
Show answer
Answer: (b) 1 4 3 2

Match List I (Biosphere Reserve) with List II (States) and select the correct answer using the codes given below:

  1. Sikkim
  2. Uttaranchal
  3. Arunachal Pradesh
  4. Orissa
  5. Meghalaya

List I (A) Simlipal (B) Dehong Deband (C) Nokrek (D) Kanchenjunga

List II

Codes:

(a) A 1 B 3 C 5 D 4
(b) A 4 B 5 C 2 D 1
(c) A 1 B 5 C 2 D 4
(d) A 4 B 3 C 5 D 1
Show answer
Answer: (d) A 4 B 3 C 5 D 1

Amongst the following Indian States which one has the minimum total forest cover?

(a) Sikkim
(b) Goa
(c) Haryana
(d) Kerala
Show answer
Answer: (c) Haryana

The Genetic Engineering Approval Committee, whose permission is required for cultivation of any genetically modified crop such as Bt-Cotton in India, is under the Union Minister of

(a) Agriculture
(b) Environment and Forests
(c) Commerce and Industry
(d) Rural Development
Show answer
Answer: (b) Environment and Forests

Consider the following animals of India:

  1. Crocodile
  2. Elephant

Which of these is/are endangered species?

(a) Only 1
(b) Only 2
(c) Both 1 and 2
(d) Neither 1 nor 2
Show answer
Answer: (c) Both 1 and 2

Consider the following statements:

  1. The common blue green algae Spirogyra and Ulothrix are found in both fresh water ponds and oceans.
  2. The chameleon can look ahead with one eye, and at the same time look behind with another.

Which of these statements is/are correct?

(a) Only 1
(b) Only 2
(c) Both 1 and 2
(d) Neither 1 nor 2
Show answer
Answer: (b) Only 2

Assertion (A): Coal-based thermal power stations contribute to acid rain.

Reason (R): Oxides of carbon are emitted when the coal burns.

(a) Both A and R are individually true and R is the correct explanation of A
(b) Both A and R are individually true but R is NOT the correct explanation of A
(c) A is true but R is false
(d) A is false but R is true
Show answer
Answer: (b) Both A and R are individually true but R is NOT the correct explanation of A

Assertion (A): Unlike temperate forests, the tropical rain forests, if cleared, can yield productive farm-land that can support intensive agriculture for several years even without chemical fertilizers.

Reason (R): The primary productivity of the tropical rain forest is very high when compared to that of the temperate forests.

(a) Both A and R are individually true and R is the correct explanation of A
(b) Both A and R are individually true but R is NOT the correct explanation of A
(c) A is true but R is false
(d) A is false but R is true
Show answer
Answer: (d) A is false but R is true