Why do plants need photosynthesis and cellular respiration?

1 Answer

The light energy is stored in chemical energy, while this energy is utilised in respiration.

Explanation:

  1. During the photosynthesis, a green plant consumes water, carbon dioxide, and light energy, and produces glucose and oxygen. The light energy is stored in chemical energy.
  2. The glucose is important for the respirstion. It is necessary for cellular respiration and energy is released.