NEET BIOLOGY

Detailed explanation-1: -The light-dependent reaction takes place within the thylakoid membrane and requires a steady stream of sunlight, hence the name light-dependent reaction. The chlorophyll absorbs energy from the light waves, which is converted into chemical energy in the form of the molecules ATP and NADPH.

Detailed explanation-2: -All plants require light for photosynthesis, the process within a plant that converts light, oxygen and water into carbohydrates (energy). Plants require this energy in order to grow, bloom and produce seed. Without adequate light, carbohydrates cannot be manufactured, the energy reserves are depleted and plants die.

Detailed explanation-3: -During photosynthesis, plants trap the light from the sun and utilize the energy of the light. Where this trapped light energy is used to convert to chemical energy and combine the water and carbon dioxide into glucose, which is used by the plants as their food.

Detailed explanation-4: -Plants use simple inorganic substances such as carbon dioxide, water and sunlight to produce complex organic substances such as glucose and starch. It is termed as photosynthesis because it can only occur in the presence of sunlight. The chlorophyll pigment in plants help in trapping the energy from the sun.

Detailed explanation-5: -The process of photosynthesis is broken up into two main groups of reactions: the “light reactions” which require light energy to operate, and the “Calvin cycle” which specifically takes carbon dioxide and turns it into organic molecules.