The sun's energy is absorbed by plants and converted into glucose during photosynthesis. Animals eat the plants and convert the glucose into useable energy in a process called cellular respiration.
Further Explanation:
The photosynthesis reaction mainly occurs in Chloroplast and cellular respiration takes place in mitochondria and cytoplasm. Photosynthesis is an anabolic process. Photosynthesis is the process by which glucose and oxygen are produced with the help of carbon dioxide, water, and sunlight.

Photosynthesis starts with the absorption of light or solar energy by the plant pigments called chlorophyll. The activated chlorophyll molecule helps in the electron transfer from one acceptor to another forming a chain. Mainly photosynthesis takes place in the chloroplast of bacteria, algae, and plants.
In the cellular respiration process, animal utilizes glucose and oxygen to produce carbon dioxide and water. Carbon dioxide released by the body is then absorbed by the plant and then they utilize it as an energy source. So, the cellular respiration process uses glucose to produce energy and photosynthesis uses sunlight to produce glucose.
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Answer Details:
Grade: High School
Subject: Biology
Chapter: Plant Cell
Keywords:
Photosynthesis, light-dependent reaction, dark reaction, energy, chlorophyll, cellular respiration, light-independent reaction, ATP, glucose, carbon dioxide, water.