NCERT - Biodiversity & Conservation Questions and Answers of Class 12 Biology | GkSeries

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Questions
16 Biogas is a mixture of
1 40 % methane and 60% CO2
2 40 % methane and 60% ethane
3 40 % CO2 and 60% methane
4 60% methane and 40% CO2

Answer: 60% methane and 40% CO2
17 Lime is added to the soil which is too
1 Sandy
2 Salty
3 Alkaline
4 Acidic

Answer: Acidic
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18 Which one of the following has maximum genetic diversity in India?
1 Tea
2 Teak
3 Mango
4 Wheat

Answer: Mango
19 Which group of vertebrates comprises the highest number of endangered species?
1 Mammals
2 Fishes
3 Reptiles
4 Birds

Answer: Mammals
20 Which one of the following is not included under in situ conservation?
1 National Park
2 Botanic Garden
3 Statuary
4 Biosphere reserve

Answer: Botanic Garden
21 The key objective of convention at Rio de Janeiro of Earth Summit in 1992
1 Conservation of biological diversity
2 Sustainable use of biodiversity
3 Fair and equitable sharing of benefits arising out of the utilization of genetic resources
4 all of these

Answer: all of these
22 The international organization IUCN is abbreviation of
1 Internal Union Council for Natural gas
2 International Union Council for Nature
3 International Union for Conservation of Nature
4 Internal United Council of Nations

Answer: International Union for Conservation of Nature
23 Which one of the following expanded forms of the followings acronyms is correct?
1 IUCN = International Union for Conservation of Nature and Natural Resources
2 IPCC = International Panel for Climate Change
3 UNEP = United Nations Environmental Policy
4 EPA = Environmental Pollution Agency

Answer: IUCN = International Union for Conservation of Nature and Natural Resources
24 Which one of the following areas in India, is a hotspot of biodiversity?
1 Sunderbans
2 Western Ghats
3 Eastern Ghats
4 Gangetic Plain

Answer: Western Ghats
25 Which one of the following is not used for ex situ plant conservation?
1 Field gene banks
2 Seed banks
3 Shifting cultivation
4 Botanical Gardens

Answer: Shifting cultivation
26 The major causes of extinction of different species includes
1 habitat loss and over-hunting
2 climate change and pollution
3 deforestation
4 all of above

Answer: all of above
27 Plants like Aegle marmelos, Ocimum sanctum and Ficus religiosa are a group of plants designated as
1 Traditional food crops
2 Sacred species of plants
3 Medicinal plant species
4 Lesser known food plants

Answer: Sacred species of plants
28 Darwin’s finches are a good example of
1 Convergent evolution
2 Industrial melanism
3 Connecting link
4 Adaptive radiation

Answer: Adaptive radiation
29 The least porous soil among the following is a
1 Loamy soil
2 Silty soil
3 Clayey soil
4 Peaty soil

Answer: Clayey soil
30 Prolonged liberal irrigation of agricultural fields is likely to create the problem of
1 Aridity
2 Metal toxicity
3 Salinity
4 Acidity

Answer: Salinity

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