Compensation point is

Options

(a) Where there is neither photosynthesis nor respiration
(b) When rate of photosynthesis is equal to the rate of respiration
(c) When entire food synthesized into photosyntiesis remain utilized
(d) When there is enough water just to meet the requirement of plant.

Correct Answer:

When rate of photosynthesis is equal to the rate of respiration

Explanation:

Compensation point is existed in morning and evening time. At this time the rate of photosynthesis (intake of CO₂) and rate of respiration (outcome of CO₂) is equal. At this point no exchange of CO₂ is possible through stomata. The unit is lumen.