Biology 2nd Edition by Robert Brooker, Eric Widmaier ,Linda Graham ,Peter Stiling

تمرين 14

Photorespiration is avoided in C 4 plants because
A) these plants separate the formation of a four-carbon molecule from the rest of the Calvin cycle in different cells.
B) these plants carry out only anaerobic respiration.
C) the enzyme PEP carboxylase functions to maintain high CO₂ concentrations in the bundle-sheath cells.
D) all of the above.
E) a and c only.