Question

The plant is known as purifiers of air due to the process of
A. Respiration
B. Photosynthesis
C. Transpiration
D. Desiccation

Answer 1

Hint: Plants are the photosynthetic living organism which is placed in a kingdom called Plantae. The plant is the most important living organism to maintain life on earth, these living organisms thrive the life on earth by maintaining the earth atmosphere and providing other energy resources.

Complete answer:
The plant performs photosynthesis in presence of sunlight in which plants fix the atmospheric carbon dioxide and water from the ground with the help of radiant energy that comes from the sun. This process makes food and makes it available to the other species and makes an ecosystem.
A. Respiration:- It is the process which is called oxidation of food in a living being to liberate the energy which is fixed in the food, that fixed energy is utilized for various other metabolic activity of maintaining the health of living beings.
B. Photosynthesis:- It is an energy-rich food formation process that occurs in plants, during this process carbon dioxide is fixed with water by using sunlight, and oxygen is evolved as a byproduct and released into the environment via the stomatal opening. This process also acts as an air purification process.
C. Transpiration:- It is the loss of water in the form of vapour via stomatal aperture which are majorly present on leaf base. It is necessary to step to maintain the water column and provide a cooling effect on the plant body.
D. Desiccation:- It is the drying out process that acts as stress during drought conditions when rainfall is low so that plants adapt to such environmental conditions by releasing some hormone that works against the stress of plants.
Hence, the correct option is B.

Note: Plants not only purify the air but also remediate contaminated land sites by phytoremediation process, in which plants stabilize or uptake the toxic contaminants from the soil and set in their body and make soil contaminant free.