HORTICULTURE

Detailed explanation-1: -Plants, algae, and a group of bacteria called cyanobacteria are the only organisms capable of performing photosynthesis (Figure 1). Because they use light to manufacture their own food, they are called photoautotrophs (literally, “self-feeders using light”).

Detailed explanation-2: -Only the plants containing chlorophyll can perform photosynthesis. There are a few plants which cannot prepare their own food and they live on other host plants as parasites and obtain their nutrients from them.

Detailed explanation-3: -Plants use a process called photosynthesis to make food. 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-4: -Only certain organisms, called autotrophs, can perform photosynthesis; they require the presence of chlorophyll, a specialized pigment that can absorb light and convert light energy into chemical energy.

Detailed explanation-5: -The correct option is A True. Photosynthesis: It is the process in which leaves use chlorophyll pigment present in them to produce oxygen and glucose in the presence of sunlight using water and carbon dioxide. The end-product formed in photosynthesis is six-carbon sugar glucose and oxygen molecules.