AP BIOLOGY

Detailed explanation-1: -Solar energy is absorbed by the chlorophylls present in leaves/plants. Oxygen is produced during photosynthesis. Oxygen released in photosynthesis is utilised by living organisms for their survival.

Detailed explanation-2: -Plants are producers-they take energy from the sun, nutrients from the ground, and water to grow and produce their flowers, seeds, and berries. They also release oxygen, which all animals, including humans, need to survive.

Detailed explanation-3: -Plants provide us with food, fiber, shelter, medicine, and fuel. The basic food for all organisms is produced by green plants. In the process of food production, oxygen is released. This oxygen, which we obtain from the air we breathe, is essential to life.

Detailed explanation-4: -Animals aid plants by dispersing seeds and assisting in blossom pollination. While grazing and browsing animals assist in preparing the land by clearing away excessive vegetation, their droppings enrich the soil.

Detailed explanation-5: -Through a process called photosynthesis, leaves pull in carbon dioxide and water and use the energy of the sun to convert this into chemical compounds such as sugars that feed the tree. But as a by-product of that chemical reaction oxygen is produced and released by the tree.