What is Photosynthesis?
Photosynthesis is the building up of simple carbohydrates such as sugars in the green leaf, which has chlorophyll, in the presence of sunlight, from carbon dioxide and water absorbed from the air and soil respectively.
Thus we understand that for photosynthesis to take place, four important things are required namely: chlorophyll, sunlight, carbon dioxide and water.
Photosynthesis takes place only in the green cells and therefore mainly in the leaf and to some extent also in the green shoot.
Non-green plants cannot photosynthesize as they are devoid of chlorophyll. Sunlight is most important as carbohydrates are not formed unless there is light.
The end products of photosynthesis are oxygen and starch. Oxygen escapes from the leaves, while the starch accumulates in them.
Photosynthesis in plants is useful to man. We get the carbohydrates when we consume the plant product and we get valuable oxygen which the plant releases.
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