NEET BIOLOGY

Detailed explanation-1: -Carbon dioxide is a gas found in the air; plants can take in this gas through tiny holes in their leaves. Once they have water and carbon dioxide, they can use energy from sunlight to make their food. The leftovers from making the plant food is another gas called oxygen.

Detailed explanation-2: -Plants breathe in oxygen and give out carbon dioxide. But during the day, the amount of carbon dioxide released is much less than the amount required for photosynthesis. So, plants take in carbon dioxide from the atmosphere for preparing food.

Detailed explanation-3: -All plants give out oxygen during day and carbon dioxide during night.

Detailed explanation-4: -(a) Correct answer: False. Explanation: During respiration, the plants take in oxygen and release carbon dioxide. This exchange of gases occurs through the stomata present on the leaves of the plant.

Detailed explanation-5: -Plants, like animals, take in oxygen and give out carbon dioxide during respiration. Only during photosynthesis, plants take in carbon dioxide and release oxygen as a byproduct.