Assertion : C_4 photosynthetic pathway is mor | vedclass

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(A) $C_4$ plants are more efficient than $C_3$ plants because they have evolved a mechanism to minimize photorespiration.In $C_4$ plants,the initial $

Vedclass · Accepted Answer

If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.

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(A) $C_4$ plants are more efficient than $C_3$ plants because they have evolved a mechanism to minimize photorespiration.In $C_4$ plants,the initial $CO_2$ fixation occurs in mesophyll cells via the enzyme $PEP$ carboxylase,which has a high affinity for $CO_2$ and does not bind with $O_2$.The $CO_2$ is then transported to bundle sheath cells,where it is released at a high concentration,ensuring that the enzyme $RuBisCO$ functions primarily as a carboxylase rather than an oxygenase.This spatial separation effectively suppresses photorespiration,making the $C_4$ pathway more efficient in terms of carbon fixation and energy utilization compared to the $C_3$ pathway.Therefore,both the Assertion and the Reason are correct,and the Reason is the correct explanation of the Assertion.

Assertion : $C_4$ photosynthetic pathway is more efficient than the $C_3$ pathway.
Reason : Photorespiration is suppressed in $C_4$ plants.

Similar Questions

Give scientific reasons:
$(1)$ The productivity of $C_4$ plants is more than $C_3$ plants.
$(2)$ It is necessary that the Calvin cycle runs for six times.

Which of the following pairs is incorrect?

$I.$ In $C_{3}$-plants,the Calvin pathway takes place in mesophyll cells.
$II.$ In $C_{4}$-plants,the Calvin pathway takes place in the mesophyll cells.
Which of the following statements is true?

Select the correct statement.

Which statement about photosynthesis is false?

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Assertion : $C_4$ photosynthetic pathway is more efficient than the $C_3$ pathway.Reason : Photorespiration is suppressed in $C_4$ plants.