Question

Plants living in hot humid environment are

• A. $C_3$ plants
• B. CAM plants
• C. $C_4$ plants
• D. All the above

Answer 1

Answer: (D)

All the above

A. C${}_3$ plants are found nearly in every area. In hot and dry conditions C${}_3$ plants are highly affected by photorespiration.

B. CAM (Crassulacean Acid Metabolism) plants are succulents which grow under extremely xeric conditions, fix atmospheric CO${}_2$ in dark.

C. The plants that perform C${}_4$ cycle are found in tropical (dry and hot regions) and sub-tropical regions.

Hence, the correct answer is 'All the above'.