A - Productivity of C_3 plants is higher than | vedclass

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(D) $C_4$ plants are more productive than $C_3$ plants because they possess a mechanism to minimize photorespiration,which is a wasteful process that

Vedclass · Accepted Answer

$A$ is false but $R$ is true.

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(D) $C_4$ plants are more productive than $C_3$ plants because they possess a mechanism to minimize photorespiration,which is a wasteful process that reduces the efficiency of carbon fixation.Therefore,the statement $A$ is false because $C_3$ plants have lower productivity compared to $C_4$ plants.Photorespiration is a process that occurs in $C_3$ plants due to the oxygenase activity of the enzyme $RuBisCO$,which binds to $O_2$ instead of $CO_2$ under certain conditions.Thus,the statement $R$ is true.Hence,the correct option is $D$.

$A -$ Productivity of $C_3$ plants is higher than $C_4$ plants.
$R -$ Photorespiration occurs in $C_3$ plants.

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$A -$ Productivity of $C_3$ plants is higher than $C_4$ plants.$R -$ Photorespiration occurs in $C_3$ plants.