NEET BIOLOGY

Detailed explanation-1: -Plants harvest energy from the sun with the help of chlorophyll and carotenoid, two photon-capturing molecules. But if the plants are exposed to too much sun, these molecules absorb more energy than they can handle and generate reactive species of oxygen that can destroy the plant.

Detailed explanation-2: -During photosynthesis, plants trap light energy with their leaves. Plants use the energy of the sun to change water and carbon dioxide into a sugar called glucose. Glucose is used by plants for energy and to make other substances like cellulose and starch.

Detailed explanation-3: -Plants adapt their photosynthetic rate according to changing environmental conditions, including excess sunlight. When there is too much light, the chlorophyll which processes photon energy into biochemical energy will redirect excess photon energy to carotenoids. The carotenoids release this photon energy as heat.