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Question

What is necessary for photosynthesis?
Chlorophyll
Sunlight
Carbon dioxide and water
All of the above

A

Chlorophyll

B

Sunlight

C

Carbon dioxide and water

D

All of the above

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Solution

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The correct option is D All of the above
Photosynthesis is the making of food by plants. The essential ingredients in making this food are sunlight, the chlorophyll that is present in green plants, water and carbon dioxide in the air.
Photosynthesis is necessary not just for plants to make food for themselves, but for animals, including us eventually.
Therefore, the correct answer is option D.

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