C_4 plants are more photosynthetically effici | vedclass

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(D) $C_4$ plants are more efficient because they have evolved a mechanism to minimize photorespiration.In $C_4$ plants,the $CO_2$ released during phot

Vedclass · Accepted Answer

The $CO_2$ generated during photorespiration is trapped and recycled by $PEP$ carboxylase.

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(D) $C_4$ plants are more efficient because they have evolved a mechanism to minimize photorespiration.In $C_4$ plants,the $CO_2$ released during photorespiration (if any occurs) or the $CO_2$ concentrated in the bundle sheath cells is efficiently refixed by the enzyme $PEP$ carboxylase.$PEP$ carboxylase has a very high affinity for $CO_2$ and does not bind with $O_2$,unlike $RuBisCO$.This mechanism ensures that $CO_2$ loss is minimized and the photosynthetic rate remains high even under conditions of low $CO_2$ concentration.

$C_4$ plants are more photosynthetically efficient than $C_3$ plants because:

Similar Questions

Which group of plants are not benefitted by $CO_2$ fertilisation effect?

Which enzyme catalyzes $CO_2$ fixation in $C_4$ plants?

Observe the diagram and answer the following:
$(a)$ Which group of plants exhibit these two types of cells?
$(b)$ What is the first product of the $C_4$ cycle?
$(c)$ Which enzymes are present in bundle sheath cells and mesophyll cells?

The enzyme which catalyzes the primary carboxylation step in the photosynthetic $C_4$ cycle is:

Select the incorrect match for the $C_4$ cycle.

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