AP BIOLOGY

Detailed explanation-1: -Animals, during respiration, take in oxygen and release carbon dioxide gas. Plants, on the other hand, utilize this carbon dioxide gas in the process of photosynthesis to produce food and release oxygen in the atmosphere. Thus, we can say that plants and animals help each other in exchange of gases in the atmosphere.

Detailed explanation-2: -Oxygen is given off by green plants in the process of photosynthesis. Green plants are the lungs of the earth! All animals inhale oxygen and exhale carbon dioxide. Plants take in carbon dioxide and give off oxygen as they make food.

Detailed explanation-3: -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.

Detailed explanation-4: -Yes, like animals and humans, plants also breathe. Plants do require oxygen to respire, the process in return gives out carbon dioxide.

Detailed explanation-5: -Gases are exchanged internally at the tissue surface. Animals release carbon dioxide into the surrounding atmosphere and take up oxygen while respiration. Whereas plants release oxygen and consume carbon dioxide from the atmosphere. Animals require oxygen for survival and energy production.