Question

Which of the following plants have low CO${}_2$ compensation point?

• A. C${}_3$ plants
• B. C${}_4$ plants
• C. C${}_2$ plants
• D. Alpine plants

Answer 1

The correct option is B C${}_4$ plants

The point where the rate of photosynthesis is equal to the rate of respiration is known as compensation point. At this point, the uptake of CO${}_2$ through photosynthetic pathways is exactly matched to the respiratory release of carbon dioxide and the uptake of O${}_2$ by respiration is exactly matched to the photosynthetic release of oxygen. C${}_4$ plant lacks photorespiration and so, the carbon dioxide compensation point is low.er than in C${}_3$ plants.

Thus, the correct answer is 'C${}_4$ plants'.