Multiple choice

Which of the following statements are not true about C4 carbon fixation?

P. CO2 fixation occurs twice. Q. Phosphoenolpyruvate acts as CO2 acceptor in bundle sheath. R. Leaf anatomy is of Kranz type. S. Requires 18 ATP for synthesis of one molecule of glucose.

  1. 1 and 2

  2. 1 and 3

  3. 2 and 3

  4. 2 and 4

  5. 3 and 4
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Phosphoenolpyruvate  (PEP) in mesophyll cells and Ribulose-1,5-bisphosphate (RuBP) in bundle sheath functions as carbon dioxide acceptors. C4 plants require 30 ATP for synthesis of one molecule of glucose.

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