NEET BIOLOGY

Detailed explanation-1: -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-2: -Did you know that roots can take oxygen from the water for respiration, although not as much as from the air? Therefore, it is important to water plants until you obtain some leachate (15-30% by volume is recommended) as this will flush out old stagnant air and exchange it for fresh oxygen.

Detailed explanation-3: -Final answer: Oxygen is not a product of respiration.

Detailed explanation-4: -Photosynthesis is the process of synthesis of food by plants using carbon dioxide and water in presence of sunlight and chlorophyll. Oxygen (O2) is released during the process as a waste product. Hence, oxygen is not essential for the process of photosynthesis.