AP BIOLOGY

Detailed explanation-1: -Plants take in CO2 during photosynthesis and give out oxygen into the atmosphere, while animals take in oxygen and breathe out carbon dioxide during respiration. In this way, plants and animals help each other in the exchange of gases in the atmosphere.

Detailed explanation-2: -Plants carry out both photosynthesis and cellular respiration. They make their own food, and then break down those glucose molecules later, generating ATP to power their cellular processes.

Detailed explanation-3: -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-4: -They perform photosynthesis because they have chloroplasts, unlike animals, that allow them to absorb solar energy. In order to convert this to usable energy from glucose, the plant undergoes cellular respiration.

Detailed explanation-5: -Animals require oxygen for survival and energy production. And plants require carbon dioxide for the process of photosynthesis to synthesize their food. Hence, due to this plants and animals are related to one another for the exchange of gases in the atmosphere.