Question

Plants are known to be the purifiers of the air due to their ability of
A. Nitrogen fixation
B. Photo Transpiration
C. Photorespiration
D. Photosynthesis

Answer 1

Hint: In the presence of sunlight and chlorophyll pigments the plants used carbon dioxide to prepare the food. All the living organisms released carbon dioxide from the waste products of the respiration system. A high amount of carbon dioxide is the result of pollutants, in the purification of the air the concentration of the carbon dioxide reduces by growing the more plants.

Complete answer:
Inorganic compounds converted into organic fuels with the help of stored potential energy in the carbon bonds during photosynthesis. Cellular respiration and photosynthesis is the complementary process but not the opposite reaction during the metabolic processes. Pigments are the molecules that absorb the wavelength and are colored. Biological pigments are produced by living organisms including plant pigments and flower pigments have a color resulting from selective color absorption. There are gems such as chlorophyll, hemoglobin, myoglobin luciferin, phytochromes, and canthaxanthin biological name of the present pigments. The principal pigments present in the plants such as chlorophyll, betalains, xanthophyll, a carotenoid. The pigments help in photosynthesis in the plants. Chlorophyll is the primary pigment and absorbed the yellow and blue wavelength and all lands plants have two types of chlorophyll present in it such as chlorophyll a and chlorophyll b but in some photosynthetic heterokonts and kelps chlorophyll c is present.

Therefore the correct option is (D).

Note: The colour of the photosynthesis pigments are red blue and green during the P680 molecule reaction. Only specific energy level electrons in the molecules can exist and probably exist at the lowest possible energy level. But at higher energy, it is unable to absorb the wavelength. Because extra energy is converted into molecular motion and the result is lost as heat energy. This process is also known as fluorescence.