The role of light in photosynthesis can be shown in (multiple choices) () A. Light is the energy source of photosynthesis B. Light can adjust stomatal opening C. Light is leaves.

Because respiration and photosynthesis are two opposite processes, the expression of photosynthesis is: carbon dioxide+water light chloroplast organic matter (energy storage)+oxygen; The performance of respiration is: organic matter+oxygen → carbon dioxide+water+energy; Photosynthesis of plants is strengthened under light, carbon dioxide produced by respiration is consumed by photosynthesis in plants, and oxygen consumed by respiration and photosynthesis can be produced in large quantities, so the respiration of plants is not significant.

A. Photosynthesis of green plants is a process that uses light energy to synthesize organic matter from carbon dioxide and water in chloroplasts, releases oxygen, and at the same time converts light energy into chemical energy and stores it in the synthesized organic matter. Carbon dioxide+water light chloroplast organic matter (energy storage)+oxygen; Light is the energy source of photosynthesis.

B, because the intensity of light (sunlight) is too strong, the leaf temperature will rise, transpiration will be enhanced, and the leaf cells will lose too much water. This plant can reduce the loss of water by closing the stomata.

C. light is an indispensable condition for chlorophyll formation. For example, leek yellow is not exposed to sunlight and chlorophyll is not formed during cultivation. If the leek is moved to the light, chlorophyll will be formed in the leek and it will turn green. This experiment proves that chlorophyll can only be synthesized under light.

Conform to the meaning of the question;

D, the activity of ribulose-1, 5- diphosphate carboxylase is also affected by light, which is consistent with the meaning of the question;

So choose: ABCD