NEET BIOLOGY

Detailed explanation-1: -Chlorophyll’s job in a plant is to absorb light-usually sunlight. The energy absorbed from light is transferred to two kinds of energy-storing molecules. Through photosynthesis, the plant uses the stored energy to convert carbon dioxide (absorbed from the air) and water into glucose, a type of sugar.

Detailed explanation-2: -(i) Sunlight, carbon dioxide, chlorophyll and water are necessary for photosynthesis. (ii) Oxygen is absorbed from the atmosphere during the process of photosynthesis.

Detailed explanation-3: -Within the thylakoid membranes of the chloroplast is a light-absorbing pigment called chlorophyll, which is responsible for giving the plant its green color. During photosynthesis, chlorophyll absorbs energy from blue-and red-light waves, and reflects green-light waves, making the plant appear green.

Detailed explanation-4: -Plants need food to grow and survive, but plants don’t eat the same kinds of foods that humans and animals eat. Plants use solar energy, energy captured from the sun, and they mix it with other things to make their nutrients. This process is called photosynthesis.

Detailed explanation-5: -The electromagnetic energy of sunlight is converted to chemical energy in the chlorophyll-containing cells of photosynthetic organisms. In eukaryotic cells these reactions occur in the organelle known as the chloroplast. In the chloroplast, chlorophyll is the pigment that absorbs the sunlight.