Q. $C_{4}$-plant minimises the photorespiration because $C_{4}$-plants
A) Use PEPcase to initiate $CO_{2}$ fixation
B) Do not carry out the Calvin cycle in low $CO_{2}$ level
C) Exclude Calvin cycle
D) Show photorespiration
Explanation
$C_{4}$-plants have very little photorespiration because its initial carbon fixation is done by PEP carboxylase not by Rubisco. Beside this, $C_{4}$-plant generate their own $CO_{2}$ by decarboxylation of $C_{4}$ acids in bundle sheath. Due to these reasons, the $C_{4}$-plants minimise photorespiration
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.