Final answer:
The statement is false; both plants and animals perform cellular respiration to obtain energy. Plants do photosynthesis to create glucose but also respire to use this glucose for energy.
Step-by-step explanation:
The statement that "plants do photosynthesis only and animals do cellular respiration only" is false. While it is true that plants perform photosynthesis, they also perform cellular respiration. In the process of photosynthesis, plants convert light energy into chemical energy in the form of glucose. They utilize chloroplasts to capture light energy and synthesize glucose and oxygen from carbon dioxide and water.
On the other hand, cellular respiration is a process by which all living organisms, including plants and animals, extract energy from glucose. This process occurs in the mitochondria, where glucose is broken down in the presence of oxygen to produce ATP (adenosine triphosphate), the energy currency of the cell, carbon dioxide, and water.
Therefore, both plants and animals carry out cellular respiration to obtain energy from carbohydrates such as glucose. While plants have the unique ability to perform photosynthesis, they still rely on cellular respiration to meet their own energy needs.