Which tree species is known for nitrogen fixation in arid regions? MCQ with Answer and Explanation

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Which tree species is known for nitrogen fixation in arid regions?

A. Fir

B. Pine

C. Acacia

D. Spruce

Answer: Option C

Solution (By JKSSB Mock Tests)

Many Acacia species improve soil fertility through nitrogen fixation.

This question belongs to: Geography GK Natural Vegetation of India

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Question #1

Which state has significant mangrove forests besides West Bengal?

A. Himachal Pradesh

B. Odisha (Bhitarkanika)

C. Punjab

D. Rajasthan

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Correct Answer: Option B

Explanation:
Bhitarkanika is a major mangrove ecosystem.

This question belongs to: Geography GK Natural Vegetation of India

Question #2

Natural vegetation refers to:

A. Cultivated crops

B. Plantations

C. Vegetation grown naturally without human interference

D. Botanical gardens

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Correct Answer: Option C

Explanation:
Natural vegetation grows naturally and is not planted by humans.

This question belongs to: Geography GK Natural Vegetation of India

Question #3

Which forest ecosystem is most affected by rising sea levels?

A. Alpine Forest

B. Mangrove Forest

C. Coniferous Forest

D. Temperate Forest

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Correct Answer: Option B

Explanation:
Mangrove forests are located along coastlines and are highly vulnerable to sea-level rise.

This question belongs to: Geography GK Natural Vegetation of India

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