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

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$A$ 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 $D$.

Column $I$	Column $II$
$i.$ Mitochondrial matrix	$p.$ Photophosphorylation
$ii.$ Chloroplast stroma	$q.$ Oxidative phosphorylation
$iii.$ Cristae	$r.$ Krebs cycle
$iv.$ Granum	$s.$ Dark reaction

Column-$I$	Column-$II$
$a.$ $OEC$	$(i)$ Primary e-acceptor
$b.$ $NADP$ reductase	$(ii)$ Photolysis of $H_2O$
$c.$ Succinyl $CoA$	$(iii)$ Outer surface of thylakoid membrane
$d.$ Phaeophytin	$(iv)$ Chlorophyll synthesis

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

Similar Questions

Assertion: Photosynthetically,$C_4$ plants are less efficient than $C_3$ plants.
Reason: The operation of the $C_4$ pathway requires the involvement of only bundle-sheath cells.

Which of the following is a unique event that provides the basis for life on this planet?

Match the following columns:
Column $I$ Column $II$
$i.$ Mitochondrial matrix $p.$ Photophosphorylation
$ii.$ Chloroplast stroma $q.$ Oxidative phosphorylation
$iii.$ Cristae $r.$ Krebs cycle
$iv.$ Granum $s.$ Dark reaction

Select the correct match.
Column-$I$ Column-$II$
$a.$ $OEC$ $(i)$ Primary e-acceptor
$b.$ $NADP$ reductase $(ii)$ Photolysis of $H_2O$
$c.$ Succinyl $CoA$ $(iii)$ Outer surface of thylakoid membrane
$d.$ Phaeophytin $(iv)$ Chlorophyll synthesis

Which of the following statements is correct regarding $C_4$ plants?

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