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Oxygen is also released through the stomata. Water is obtained by the plant through the roots and delivered to the leaves through vascular plant tissue systems. Sunlight is absorbed by chlorophyll, a green pigment located in plant cell structures called chloroplasts. Chloroplasts are the sites of photosynthesis.
Plants require photosynthesis to make their own food (glucose) from water, carbon dioxide, and sunlight. They use a process called cellular respiration to break the glucose do â¦ wn into energy that the plant can use.Animals require the food and oxygen produced by photosynthesis for cellular respiration themselves.Plants, on the other hand, need animals' carbon dioxide in order to photosynthesize. Therefore, all life on Earth depends on photosynthesis. 1 person found this useful.. Photosynthesis is used to produce food from light, this is the most basic foundation of almost all food and life cycles on earth (primary producers). 2. Photosynthesis help â¦ s moderate the carbon dioxide levels of the planet.