21. Consider the following kinds of organisms:
1. Bat
2. Bee
3. Bird
Which of the above is/are pollinating agents/agents?
a) 1 and 2 only
b) 2 only
c) 1 and 3 only
d) 1, 2 and 3
Answer. d)
22. Which one of the following groups of animals belongs to the category of endangered species?
a) Great Indian Bustard, Musk Deer, Red Panda, and Asiatic Wild Ass
b) Kashmir Stag, Cheetal, 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
Answer. a)
23. The Millennium Ecosystem Assessment describes the following major categories of ecosystem services—provisioning, supporting, regulating, preserving, and cultural.
Which one of the following is supporting service?
a) Production of food and water
b) Control of climate and disease
c) Nutrient cycling and crop pollination
d) Maintenance of diversity
Answer. c)
24. What is the difference between the antelope's Oryx and Chiru?
a) Oryx is adapted to live in hot and arid areas whereas Chiru is adapted to live in steppes and semi-desert areas of cold high mountains.
b) Oryx is poached for its antlers whereas Chiru is poached for its musk.
c) Oryx exists in western India only whereas Chiru exists in north-east India only.
d) None of the statements (a), (b), and (c) given above is correct.
Answer. a)
25. Which of the following can be threats to the biodiversity of a geographical area?
1. Global warming
2. Fragmentation of habitat
3. Invasion of alien species
4. Promotion of vegetarianism
Select the correct answer using the codes given below:
a) 1, 2, and 3 only
b) 2 and 3 only
c) 1 and 4 only
d) 1, 2, 3 and 4
Answer. a)
26. Consider the following:
1. Black-necked crane
2. Cheetah
3. Flying squirrel
4. Snow leopard
Which of the above are naturally found in India?
a) 1, 2, and 3 only
b) 1, 3, and 4 only
c) 2 and 4 only
d) 1, 2, 3 and 4
Answer. b)
27. Consider the following agricultural practices:
1. Contour bunding
2. Relay cropping
3. Zero tillage
In the context of global climate change, which of the above helps/help in carbon sequestration/storage in the soil?
a) 1 and 2 only
b) 3 only
c) 1, 2 and 3
d) None of them
Answer. c)
28. What would happen if the phytoplankton of an ocean is completely destroyed for some reason?
1. The ocean as a carbon sink would be adversely affected.
2. The food chains in the ocean would be adversely affected.
3. The density of ocean water would drastically decrease.
Select the correct answer using the codes given below:
a) 1 and 2 only
b) 2 only
c) 3 only
d) 1, 2 and 3
Answer. a)
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