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Free Download as PDF of the detailed solutions for class 12 Biology from NCERT or CBSE text book as per exam pattern, to help you in day to day learning. We provide all important questions and answers from chapter Evolution of Biology.
46
Dodo is
[1]
endangered
[2]
critically endangered
[3]
rare
[4]
extinct
47
Which one of the following is the correctly matched pair of an endangered animal and a national park?
[1]
Great Indian: Keoladeo National Park Bustard
[2]
Lion: Corbett National Park
[3]
Rhinoceros: Kaziranga National Park
[4]
Wild ass: Dudhwa National Park
Answer: Rhinoceros: Kaziranga National Park
48
Which one of the following is not observed in biodiversity hotspots?
[1]
Species richness
[2]
Endemism
[3]
Accelerated species loss
[4]
Lesser inter-specific competition
Answer: Lesser inter-specific competition
49
Sacred groves are specially useful in
[1]
Generating environmental awareness
[2]
Preventing soil erosion
[3]
Year-round flow of water in rivers
[4]
Conserving rare and threatened species
Answer: Conserving rare and threatened species
50
Indri-indri lemur is found in
[1]
Sri Lanka
[2]
India
[3]
Mauritius
[4]
Madagaskar
51
The term Alpha diversity refers to
[1]
Genetic diversity
[2]
Community and ecosystem diversity
[3]
Species diversity
[4]
Diversity among the plants
Answer: Community and ecosystem diversity
52
Maximum nutritional diversity is found in the group:
[1]
33% for plains and 67% for hills
[2]
37% for plains and 63% for hills
[3]
20% for plains and 70% for hills
[4]
23% for plains and 77% for hills
Answer: 33% for plains and 67% for hills
53
Which endangered animal is the source of the world’s finest, lightest, warmest and most expensive wool -the shahtoosh?
[1]
Nilgai
[2]
Cheetal
[3]
Chiru
[4]
Kasmiri goat
54
The law which ensure environmental stability and maintenance of ecological
balance is
[1]
Forest Act 1927
[2]
National Forest Policy 1988
[3]
Wildlife Act 1972
[4]
Wild Life Protection Act 1991
Answer: National Forest Policy 1988
55
The total energy required by one man approximately-----per/day:
[1]
10000-20000 kcal
[2]
1000-2000 kcal
[3]
2000 - 4000 kcal
[4]
3000-5000 kcal
56
Which one of the following areas in India, is a hotspot of biodiversity?
[1]
Sunderbans
[2]
Western Ghats
[3]
Eastern Ghats
[4]
Gangetic Plain
57
Biodiversity of a geographical region represents
[1]
Genetic diversity present in the dominant species of the region
[2]
Species endemic to the region
[3]
Endangered species found in the region
[4]
The diversity in the organisms living in the region
Answer: The diversity in the organisms living in the region
58
Global warming can be controlled by
[1]
Reducing deforestation, cutting down use of fossil fuel
[2]
Reducing reforestation, increasing the use of fossil fuel
[3]
Increasing deforestation, slowing down the growth of human population
[4]
Increasing deforestation, reducing efficiency of energy usage
Answer: Reducing deforestation, cutting down use of fossil fuel
59
Which one of the following is not included under in situ conservation?
[1]
National park
[2]
Wild life sanctuary
[3]
Zoological garden
[4]
Biosphere reserve
Answer: Zoological garden
60
Which is an extinct species?
[1]
Dodo of Mauritius
[2]
Kiwi from New Zealand
[3]
Cheetah from India
[4]
both b and c
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