Question

Plants are known to be the purifiers of air due to their ability of

• A. Nitrogen fixation.
• B. Photo-transpiration.
• C. Photorespiration.
• D. Photosynthesis.

Answer 1

The correct option is D Photosynthesis.

During photosynthesis, the plants absorb and fix the carbon dioxide from the atmosphere. The carbon dioxide is used by the plant cells to prepare the food in the presence of sunlight and chlorophyll pigment. The carbon dioxide is released as the waste product of respiration by all the living organisms. Carbon dioxide in high amounts is considered as a pollutant. The plants fix this carbon dioxide and reduce the concentration of this gas in the atmosphere and help in the purification of the air.

Thus, the correct answer is option D.