Why are C₄ plants able to photosynthesize with no apparent photorespiration?
A) They do not participate in the Calvin cycle.
B) They use PEP carboxylase to initially fix CO₂.
C) They conserve water more efficiently.
D) They exclude oxygen from their tissues.

Question

Quizplus · Accepted Answer

C₄ plants use PEP carboxylase to initially fix CO₂, which bypasses the oxygenation reaction that leads to photorespiration. This allows them to photosynthesize without apparent photorespiration.

Why Are C₄ Plants Able to Photosynthesize with No Apparent