Question

In plants optimum growth occurs in a.White light b. Red light c. blue light d. Green light​

Answer 1

Answer:

a) White light.

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Answer 2

Explanation:

In chloroplasts, the main pigment present is chlorophyll which is green in color. Growth of plant is affected by the different wavelengths of light as pigments in chloroplasts absorb different wavelengths of light for photosynthesis. White light is a mixture of many wavelengths of colors. Chlorophyll will absorb energies from all visible light except green. Hence exposing white light to a green plants will result in the fastest rate of photosynthesis which in turn result in fastest growth. Hence, optimum growth occurs in white light followed by blue or red.

Thus, the correct answer is option C.