Answer :

Oxygen for cellular respiration is obtained by plants from the atmosphere and their chloroplasts. Photosynthesis is a process that plants can do in the presence of light to create sugars from carbon dioxide and water.

In the presence of sunshine, plants use a process called photosynthesis to transform the carbon dioxide their leaves and roots absorb into oxygen and sugar (glucose). The green pigment chlorophyll is present throughout this process, which occurs in the chloroplast of the plant cell. Plants absorb water (H2O) and carbon dioxide (CO2) from the soil and atmosphere during photosynthesis. Water is oxidized, which means it loses electrons, while carbon dioxide is reduced, which means it receives electrons, inside the plant cell.

Water is converted into oxygen and carbon dioxide into glucose as a result. In the presence of sunshine, all green plants generate their food through a biological process called photosynthesis. Plants make energy during photosynthesis by utilizing sunlight, water, and carbon dioxide. As a byproduct of this process, oxygen gas is released.

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