NEET BIOLOGY

Detailed explanation-1: -Similarly, roots of plants take in air from the air spaces present between the soil particles. Thus, the oxygen absorbed through roots are used to release energy. In the case of the stem, the air gets diffused in the stomata and passes through various parts of the cell for respiration.

Detailed explanation-2: -Roots need oxygen, too! In the ground, air and water are held in little pockets called soil pores. If the soil is dense and compacted (with no soil pores), there will not be enough oxygen available for respiration. Too much water in the soil will also limit the amount of oxygen the roots can take in.

Detailed explanation-3: -Plants do require oxygen to respire, the process in return gives out carbon dioxide. Unlike humans and animals, plants do not possess any specialized structures for exchange of gases, however, they do possess stomata (found in leaves) and lenticels (found in stems) actively involved in the gaseous exchange.

Detailed explanation-4: -In root systems, oxygen (O2) in soil pores diffuses into the root hairs and gets transported to all parts of the roots. Plant roots use photosynthates during respiration for their various functions, like nutrient uptake and maintaining and growing their tissues.

Detailed explanation-5: -How Does Respiration Occur in Roots? The roots of a plant take up air from the spaces between the soil particles. Root hairs are in contact with the air in the soil particles. Oxygen from the air in soil particles diffuse into root hair and reach all the cells of the root where it is utilised in respiration.