Match List I with List II and select the correct answer using the code given below: List I | List II A. Birds | 1. 12% B. Mammals | 2. 23% C. Amphibians | 3. 31% D. Gymnosperms | 4. 32%

The correct Answer is A Explanation This question assesses knowledge regarding the percentage of threatened species within different taxonomic groups, a key aspect of biodiversity conservation and environmental studies. Statement-wise Analysis - A. Birds - 1. 12%: Correct. According to conservation data, approximately 12% of bird species are currently threatened with extinction. - B. Mammals - 2. 23%: Correct. Around 23% of all mammal species are considered threatened. - C. Amphibians - 4. 32%: Correct. Amphibians face a significant threat, with about 32% of their species being endangered. - D. Gymnosperms - 3. 31%: Correct. Approximately 31% of gymnosperm species are threatened. Key Takeaway The question highlights the varying proportions of threatened species across major biological groups, emphasizing the critical conservation status of amphibians and gymnosperms.

NCERT Class 12 Environment & Ecology — Chapter 2: Biodiversity and Conservation

mcqhard

Match List I with List II and select the correct answer using the code given below:

List I	List II
A. Birds	1. 12%
B. Mammals	2. 23%
C. Amphibians	3. 31%
D. Gymnosperms	4. 32%

Official previous-year question

Verified 1 Aug 2026.

Options

AA-1, B-2, C-4, D-3
BA-2, B-1, C-3, D-4
CA-1, B-4, C-2, D-3
DA-3, B-2, C-1, D-4

Did you get this right?

Solution

The correct Answer is A

Explanation

This question assesses knowledge regarding the percentage of threatened species within different taxonomic groups, a key aspect of biodiversity conservation and environmental studies.

Statement-wise Analysis

A. Birds - 1. 12%: Correct. According to conservation data, approximately 12% of bird species are currently threatened with extinction.
B. Mammals - 2. 23%: Correct. Around 23% of all mammal species are considered threatened.
C. Amphibians - 4. 32%: Correct. Amphibians face a significant threat, with about 32% of their species being endangered.
D. Gymnosperms - 3. 31%: Correct. Approximately 31% of gymnosperm species are threatened.

Key Takeaway

The question highlights the varying proportions of threatened species across major biological groups, emphasizing the critical conservation status of amphibians and gymnosperms.

Your note

More from Chapter 2: Biodiversity and Conservation

Among the 'Evil Quartet', which factor is considered the most significant driver of biodiversity loss?

easy

Loss of biodiversity in a region is generally associated with which of the following? 1. Decline in plant production 2. Increased resistance to environmental perturbations 3. Increased variability in certain ecosystem processes Select the correct answer using the code given below:

medium

Which of the following is NOT part of the “Evil Quartet” causing biodiversity loss?

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Which one of the following is a defining attribute of a biodiversity hotspot?

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Which of the following is an example of an invasive plant causing ecological damage in India?

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Keep practising Chapter 2: Biodiversity and Conservation

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The correct Answer is A

Explanation

This question assesses knowledge regarding the percentage of threatened species within different taxonomic groups, a key aspect of biodiversity conservation and environmental studies.

Statement-wise Analysis

A. Birds - 1. 12%: Correct. According to conservation data, approximately 12% of bird species are currently threatened with extinction.
B. Mammals - 2. 23%: Correct. Around 23% of all mammal species are considered threatened.
C. Amphibians - 4. 32%: Correct. Amphibians face a significant threat, with about 32% of their species being endangered.
D. Gymnosperms - 3. 31%: Correct. Approximately 31% of gymnosperm species are threatened.

Key Takeaway

The question highlights the varying proportions of threatened species across major biological groups, emphasizing the critical conservation status of amphibians and gymnosperms.