NEET BIOLOGY

Detailed explanation-1: -Air is needed for the roots primarily to allow the plants to breathe. If air is not available to the roots, it can cause the roots to fail.

Detailed explanation-2: -Air is not essential for a plant’s growth; they can live without it. Air is absorbed into the roots of the plants to provide the necessary oxygen. Plants absorb carbon dioxide from the air to use during photosynthesis.

Detailed explanation-3: -Plants need three main ingredients to make their food: water, carbon dioxide and sunlight. Plants take up the water that they need from the soil through their roots. Carbon dioxide is a gas found in the air; plants can take in this gas through tiny holes in their leaves.

Detailed explanation-4: -It is important for living organisms to respire the oxygen for living cells to function . Plants use carbon dioxide (together with sunlight and water) to produce energy and give out oxygen as a by-product which helps living organisms to survive their life.