EVERYDAY SCIENCE

Detailed explanation-1: -Plants needed to excrete carbon dioxide and oxygen. Carbon dioxide is the waste product involved in the aerobic respiration of the plants whereas oxygen is the waste product during the process called photosynthesis.

Detailed explanation-2: -Most plants are autotrophs, meaning they make their own food. Photosynthesis is the process these plants use to synthesize sugar molecules from sunlight, water, and carbon dioxide. During photosynthesis, plants release oxygen as a waste product.

Detailed explanation-3: -Photosynthesis is the only biological process which releases oxygen into the atmosphere. Oxygen supports all life on earth.

Detailed explanation-4: -In photosynthesis, solar energy is harvested and converted to chemical energy in the form of glucose using water and carbon dioxide. Oxygen is released as a byproduct.

Detailed explanation-5: -When plants respire, plants produce carbon dioxide and this excess carbon dioxide must be eliminated. Hence the waste products in plants are oxygen, carbon dioxide and water.