Question

Help ASAP!!! 15 points

Answer 1

Number 1: the oxygen is a waste material because it is not involved in the synthesis of the food material i.e the glucose. It is of no use to the plant thus a waste material.

Number 3: Photosynthesis is how plants combine light water and carbon dioxide to produce energy (glucose) and oxygen. The glucose powers the plants functions and the oxygen is releasesd back into the atmosphere. Cellular Respiration is how animals combine glucose and oxygen to produce carbon dioxide and water.

Answer 2

Yes, it is. Plants need oxygen to survive, and plant cells are constantly using oxygen. Under certain circumstances, plant cells need to take in more oxygen from the air than they generate themselves. So, if plants generate oxygen through photosynthesis, why do plants need oxygen? The reason is that plants respire, too, just like animals. Respiration doesn’t just mean “breathing.” It is a process that all living things use to release energy for use in their cells.