CBSE - Class 12 Biology Questions and Answers on Biodiversity & Conservation | NCERT - Biology Questions and Answers for Class 12 | NCERT Biology | NCERT Solution Online | MCQs on Biodiversity & Conservation

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

View Answer

Answer: 60% methane and 40% CO₂

17 Lime is added to the soil which is too

1 Sandy

2 Salty

3 Alkaline

4 Acidic

View Answer

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

View Answer

Answer: Mango

19 Which group of vertebrates comprises the highest number of endangered species?

1 Mammals

2 Fishes

3 Reptiles

4 Birds

View Answer

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

View Answer

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

View Answer

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

View Answer

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

View Answer

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

View Answer

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

View Answer

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

View Answer

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

View Answer

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

View Answer

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

View Answer

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

View Answer

Answer: Salinity

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