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C₄ plants are generally adapted to

(a) deep shade Your answer
(b) dry tropical regions Correct
(c) submerged aquatic habitats Your answer
(d) cold temperate regions Your answer

Your answer: Correct answer: (b)

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Explanation

Why (b) is correct

C₄ plants are adapted to dry tropical regions: they tolerate high temperatures and light, and use water efficiently.

Why the other options are wrong

(a) · your answer C₄ plants respond best to high light, not deep shade.
(c) · your answer Submerged aquatic habitats are not the typical habitat of C₄ plants.
(d) · your answer Cold temperate regions favour C₃ plants, which have a lower temperature optimum.

NCERT point: C₄ plants have a higher temperature optimum and show no photorespiration.

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