HORTICULTURE

Detailed explanation-1: -Animals and plants are connected to each other by the oxygen-carbon dioxide cycle. Plants need the carbon dioxide from animals to live and animals must have the oxygen from plants to survive.

Detailed explanation-2: -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-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: -Plants do require oxygen for respiration which in return gives out carbon dioxide. Unlike animals, plants do not have any specialized structures for gaseous exchange but they have stomata (present in leaves) and lenticels (present in stems) which are involved in the exchange of gases.

Detailed explanation-5: -Answer and Explanation: Carbon dioxide and oxygen are utilized by plants and animals during their metabolism. Animals break down carbon-based compounds such as glucose to produce carbon dioxide and atp. Plants also utilize carbon-based compounds to produce ATP and release carbon dioxide as a byproduct.