NEET Biology question

Statement 1: Photosynthetically, C4-plants are less efficient than C3-plants. Statement 2: The operation of the C4-pathway involves both mesophyll cells and bundle-sheath cells (Kranz anatomy).

(A)Assertion is True, Reason is True; Reason is correct explanation for Assertion
(B)Assertion is True, Reason is True; Reason is not correct explanation for Assertion
(C)Assertion is True, Reason is False
(D)Assertion is False, Reason is TrueCorrect

Answer: (D)

Solution

C4-plants are actually photosynthetically more efficient than C3-plants, since Kranz anatomy and the C4 pathway concentrate CO2 around RuBisCO in the bundle sheath and largely suppress photorespiration, so Statement 1 (that C4 plants are "less efficient") is false.

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Question ID VK-128026