Which of the following statements is not true | vedclass

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(D) The $C_4$ pathway is an adaptation found in plants to minimize photorespiration and maximize photosynthetic efficiency in hot,dry environments. $1

Vedclass · Accepted Answer

It is inhibited by high $CO_2$ concentration.

Vedclass · Answer

(D) The $C_4$ pathway is an adaptation found in plants to minimize photorespiration and maximize photosynthetic efficiency in hot,dry environments. $1$. It requires more energy $(ATP)$ than the $C_3$ pathway because it involves an additional cycle to concentrate $CO_2$ in bundle sheath cells. $2$. It effectively eliminates photorespiration by maintaining a high concentration of $CO_2$ around the enzyme RuBisCO. $3$. The primary $CO_2$ acceptor in the mesophyll cells is Phosphoenolpyruvate $(PEP)$,which is a $C_3$ compound. $4$. The $C_4$ pathway is not inhibited by high $CO_2$ concentration; in fact,it is highly efficient at low $CO_2$ levels and functions well under high light and temperature conditions. Therefore,the statement that it is inhibited by high $CO_2$ concentration is false.

Which of the following statements is not true regarding the $C_4$ pathway?

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