CBSE 12th Standard Biology Subject Environmental Issues Ncert Exemplar MCQ Questions 2021
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CBSE 12th Standard Biology Subject Environmental Issues Ncert Exemplar MCQ Questions 2021
12th Standard CBSE
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Reg.No. :
Biology
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What is the main cause for the extinction of some species in a tropical forest?
(a)Deforestation
(b)afforestation
(c)pollution
(d)soil erosion
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Read the two statements A and B
Statement A: Diversity observed in the entire geographical area is called gamma diversity.
Statement B: Biodiversity decrease from high altitude to low altitude, Identify the correct choice from these given below:(a)statement A is correct, B is worng
(b)Statement B is correct, A is wrong
(c)both the statement A and B are correct
(d)both the statement A and B are wrong
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A taxon which is facing an extremely high risk of extinction in the wild in immediate future is known as
(a)rare
(b)exotic
(c)vulnerable
(d)endangered
(e)critically endangered
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Which was the first National park established in India?
(a)Kanha
(b)Jim Corbett
(c)Kaziranga
(d)Gir
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Which of the following forests is known as the 'lungs of the planet Earth'?
(a)Taiga forest
(b)Tundra forest
(c)Amazon rain forest
(d)Rainforest of North East India
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The active chemical drug reserpine is obtained from:
(a)Datura
(b)Rauwolfia
(c)Atropa
(d)Papaver
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What is common to the techniques (i) in vitro fertilization, ii)Cryopreservation and, iii)tissue culture?
(a)All are in situ conservation methods.
(b)All are ex situ conservation methods
(c)All require ultra modern equipment and large space.
(d)All are methods of conservation of extinct organisms.
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the natural habitat of Indian Rhinoceros is found in which Indian state?
(a)Arunachal Pradesh
(b)Assam
(c)Himachal Pradesh
(d)Uttar Pradesh
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Hotspots of biodiversity means
(a)area of the earth that contains many endemic species
(b)species servers as a proxy for entire communities in particular area
(c)species in particular niche/area
(d)species diversity at particular area
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Which one of the following is correct expanded form of the acronym?
(a)IPCC-International panel for climate change
(b)UNEP-United Nations Environmental Policy
(c)EPA-Environmental Pollution Agency
(d)The IUCN-International Union for Conservation of nature and natural Resources
Multiple Choice Questions
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CBSE 12th Standard Biology Subject Environmental Issues Ncert Exemplar MCQ Questions 2021 Answer Keys
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(a)
Deforestation
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(a)
statement A is correct, B is worng
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(e)
critically endangered
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(b)
Jim Corbett
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(c)
Amazon rain forest
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(b)
Rauwolfia
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(b)
All are ex situ conservation methods
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(b)
Assam
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(a)
area of the earth that contains many endemic species
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(d)
The IUCN-International Union for Conservation of nature and natural Resources
Multiple Choice Questions
