BIOMOLECULES AND ENZYMES

Detailed explanation-1: -In this process, glucose undergoes partial oxidation to form two molecules of pyruvic acid. In plants, this glucose is derived from sucrose, which is the end product of photosynthesis, or from storage 2022-23 Page 4 RESPIRATION IN PLANTS 229 carbohydrates.

Detailed explanation-2: -Plants make sugar by using energy from sunlight to transform carbon dioxide (CO2), a gas absorbed from the air, and water (H20) taken from the ground by roots into glucose (C6H12O6) and oxygen (O2). This process is called photosynthesis and occurs in the chloroplast of the plant cell.

Detailed explanation-3: -Plants use glucose for respiration. They break down glucose and the chemical energy thus released is used by the plant for other cellular activities. Glucose is also used to prepare starch and cellulose.

Detailed explanation-4: -While most aerobic respiration (with oxygen) takes place in the cell’s mitochondria, and anaerobic respiration (without oxygen) takes place within the cell’s cytoplasm.

Detailed explanation-5: -All green plants breathe through the process of Cellular respiration. In this process, nutrients obtained from the soil are converted into energy and are used for different cellular activities.