What is the primary function of cellular respiration in plants?

The primary function of cellular respiration in plants is to release energy from ATP. During cellular respiration, plants break down glucose, which was previously produced through photosynthesis, in the presence of oxygen. This metabolic process involves a series of biochemical reactions that convert the chemical energy stored in glucose into adenosine triphosphate (ATP), the energy currency of the cell.

ATP is essential for various cellular processes, including growth, reproduction, and maintenance of cellular functions. Through cellular respiration, plants are able to harness the energy stored in organic compounds to fuel their activities, ensuring their survival and functioning.

In contrast, the absorption of sunlight is a function of photosynthesis, not cellular respiration. Storing energy in glucose occurs during photosynthesis as well, while the production of carbon dioxide is a byproduct of cellular respiration, not a primary function.