The Environmental studies MCQ section provides the most important question and answer session in the environment and ecology section as a part of any competitive examination. These environmental studies MCQ are very important and provide a handy practice before any exam.
Biodiversity MCQ-Environmental studies
1. Biodiversity day is celebrated on
(A)Â 29 December
(B)Â 22 May
(C)Â 28 February
(D)Â 30 January
2. Most prominent reason of  Biodiversity loss is due to
(A)Â Destruction of natural habitats
(B)Â Improper agricultural operations
(C)Â Climate change
(D)Â Water pollution
3. The ‘Hot Spot’ of Biodiversity in India areÂ
(A)Â Western Himalayas and Eastern Ghat
(B)Â Western Himalayas and Sunderban
(C)Â Â Eastern Himalayas and the Western Ghats
(D)Â Â Eastern Himalayas and Silent Valley
4.  The tallest known living tree
(A) Eucalyptus
(B) SequoiaÂ
(C) Deodar
(D) Parnang
5.  A species is considered to be extinct if it has not been seen in its natural habitat for___years.
(A) 15 years
(B) 25 yearsÂ
(C) 40 years
(D) 50 years
6. Which one of the following is not a ‘biodiversity hot spot’ of India?
(A) Himalayas
(B) Vindhyas
(C) North-East India
(D) Western Ghats
7. Which one of the following is not responsible for the extinction of a species?
(A) Broad nicheÂ
(B) Large body size
(C) Narrow niche
(D) Lack of genetic variability
8. The maximum biodiversity is found in____?Â
(A) Tropical rainforest
(B) Temperate forest
(C) Coniferous forest
(D) Arctic forest
9. Organization related to ‘Red Data Book’ or ‘Red List’ is
(A) UTES
(B) IUCN
(C) IBWC
(D) WWF
10. Endangered species are listed in
(A) Dead Stock Book
(B) Red Data Book
(C) Live Stock Book
(D) None of the above
11. The most important strategy for the conservation of biodiversity together with traditional human life is the establishment of_____?Â
(A) Biosphere reserves
(B) Botanical Gardens
(C) National parks
(D) Wildlife Sanctuaries
12. Which one of the following States is related to ‘Silent Valley Project’?Â
(A) Uttarakhand
(B) Himachal Pradesh
(C) Kerala
(D) Tamil Nadu
13. ‘Valley of Flowers’ is situated in
(A) Kerala
(B) Jammu and Kashmir
(C) Uttarakhand
(D) Himachal Pradesh
14. Which one of the following is not a site for an in-situ method of conservation of flora?
(A) Biosphere Reserve
(B) Botanical Garden
(C) National Park
(D) Wildlife Sanctuary
15. The richest biodiversity is found in the_____?
(A) Silent Valley
(B) Kashmir Valley
(C) Valley of Flowers
(D) Surma Valley
16. Biosphere reserves are areas for conservation of____?
(A) Grasslands
(B) Agriculture production
(C) Atmospheric balance
(D) Genetic variation
17. Wetland day is observed on
(A) 2nd February
(B) 2nd April
(C) 2nd May
(D) 2nd March
18. The Ramsar Convention was associated with the conservation of____?
(A) Bio-fuels
(B) Forests
(C) WetlandsÂ
(D) Drylands
19. Cartagena protocol is related to
(A) Bio-safety agreement
(B) Pollution
(C) Ozone depletion
(D) Climate change
20. Which of the following gas is commonly used in Cryo-Bank for ex-situ conservation?
(A) Nitrogen
(B) Oxygen
(C) Carbon dioxide
(D) Methane
21. The maximum biodiversity is found in _____?Â
(A) Tropical rainforest
(B) Temperate forest
(C) Coniferous forest
(D) Arctic forest
22. Which one of the following Indian birds are a highly endangered species?
(A) Golden Oriole
(B) Great Indian Bustard
(C) Indian Fantail Pigeon
(D) Indian Sunbird
23. The richest biodiversity is found in the ______?
(A) Silent Valley
(B) Kashmir Valley
(C) Valley of Flowers
(D) Surma Valley
24. ‘Valley of Flowers’ is situated in
(A) Kerala
(B) Jammu and Kashmir
(C) Uttarakhand
(D) Himachal Pradesh
25. Which one of the following States is related to ‘Silent Valley Project’?
(A) Uttarakhand
(B) Himachal Pradesh
(C) Kerala
(D) Tamil Nadu
26. In India, which one of the following States has the largest inland saline wetland ?
(A) Gujarat
(B) Haryana
(C) Madhya Pradesh
(D) Rajasthan
27. Biosphere reserves are areas for conservation ofÂ
(A) Grasslands
(B) Agriculture production
(C) Atmospheric balance
(D) Genetic variation
28. Which one of the following is the most effective factor of coral bleaching?Â
(A) Marine pollution
(B) Increase of salinity of seas
(C) Rise in normal temperature of sea-water
(D) The outbreak of diseases and epidemics
29.  Which of the following drug has been reported as responsible for vulture death?
(A) Aspirin
(B) Chloroquine
(C) Diclofenac Sodium
(D) Penicillin
30. A tree species in Mauritius failed to reproduce because of the extinction of a fruit-eating bird. Which one of the following was that bird?Â
(A) Dove
(B) Dodo
(C) Condor
(D) Skua
31. In the context of Indian wildlife, the flying fox is a
(A) BatÂ
(B) Kite
(C) Stork
(D) Vulture
32. The marine animal called dugong which is vulnerable to extinction is
a/an_____?
(A) Amphibian
(B) Bony fish
(C) Shark
(D) Mammal
33. The annual production of biomass is minimal in which of the environment.
(A) Deep sea
(B) Prairie
(C) Deciduous forest
(D) Taiga
34. In which of the following states is lion-tailed macaque found in its natural habitat?
1. Tamil Nadu
2. Kerala
3. Karnataka
4. Andhra Pradesh
Select the correct answer using the code given below.
(A) 1, 2 and 3
(B) Only 2
(C) 1, 3 and 4
(D) All of these
35. Which of the following can be threats to the biodiversity of a geographical area?Â
1. Global warming
2. Fragmentation of habitat
3. Invasion of alien species
4. Promotion of vegetarianism
Select the correct answer using the code given below.
(A) 1, 2 and 3
(B) 2 and 3
(C) 1 and 4
(D) 1, 2, 3 and 4
