Which of the following statements about C3 and C4 plants is incorrect? a. In C4

Question

Which of the following statements about C3 and C4 plants is incorrect?

a. In C4 plants, the CO2 is first incorporated into a 4-carbon compound and in C3 plants the CO2 is first incorporated into a 3-carbon compound.

b. C4 plants use PEP Carboxylase for the uptake of CO2 and C3 plants use Rubisco for the uptake of CO2.

c. Both systems use Rubisco for final CO2 incorporation into sugar.

d. C4 is more water efficient because PEP Carboxylase brings in CO2 at lower concentrations and does not need to keep stomata open long.

e. a and c

Explanation / Answer

Answer : The incorrect statements is A

Statement A is incorrect because, In C4 plants the corbon dioxide is incorpaorated into 3 corbon compound, Phosphoenol pyruvate and in case of C3 plants CO2 is incorporated into six carbon comppound called Ribulose bisphosphate.

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