AP BIOLOGY

Detailed explanation-1: -So they take in what you exhaled, they take in carbon dioxide and they give out oxygen. And this is during the day. So during the day they take in carbon dioxide and they release oxygen.

Detailed explanation-2: -Typically, stomata are open during the day and closed at night, like some people’s mouths. Many other signals cause stomata to open and close. Open stomata allow carbon dioxide to enter the plant, however, water vapour can escape, so regulation of stomata is crucial for maintaining plant water status.

Detailed explanation-3: -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-4: -A new study involving ANU and international collaborators has found plants release more carbon dioxide into the atmosphere through respiration than expected. Plants use photosynthesis to capture carbon dioxide and then release half of it into the atmosphere through respiration.

Detailed explanation-5: -As we all know, leaves have tiny pores called stomata, which is used for the exchange of gases. The oxygen, taken in through stomata is used by cells in the leaves to break down glucose into carbon dioxide and water.