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Which statement about 3-PGA is correct?

(a) It is the CO₂ acceptor of C₃ plants. Your answer
(b) It is the first stable product in C₃ plants. Correct
(c) It is a 4-carbon acid formed in mesophyll. Your answer
(d) It is formed by PEP carboxylase in C₄ plants. Your answer

Your answer: Correct answer: (b)

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Explanation

Why (b) is correct

3-PGA is the first stable product of CO₂ fixation in C₃ plants.

Why the other options are wrong

(a) · your answer The acceptor is RuBP; PGA is the product.
(c) · your answer 3-PGA has three carbons, not four.
(d) · your answer PEP carboxylase forms OAA, not PGA.

NCERT point: C₃ plants are named after this 3-carbon product.

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