Question

Due to photorespiration approximetely _______ of photosynthetically fixed CO₂ is lost
a) 25%
b) 50%
c) 60%
d) 80%

Answer 1

Due to photorespiration approximetely _______ of photosynthetically fixed CO₂ is lost

a) 25%

Answer 2

Answer:

a) 25%

Explanation:

Due to photorespiration approximately 25% of $CO_{2}$ is fixed. Photorespiration is a wasteful process mainly found in C3 plants. This is the main process which differentiates the C3 plants from C4 plants. When $CO_{2}$ level is low in leaves then photorespiration begins. C4 plants lack this process. This is a wasteful process because there is no synthesis of ATP of NADPH.