Both photosynthesis and cellular respiration provides organism with the usable energy.
Explanation:
Photosynthesis is the process carried out by the plants by using sunlight to produce the energy required to carry different cellular activities in the plants.
In similar manner, the cellular respiration is also a metabolic activity that converts the nutrients energy into the ATP which is a usable energy form by the organism.
It breaks down the complex form of glucose in to useful energy.
