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Question

Which of the following is necessary for photosynthesis?


A

Carbon dioxide

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B

Methane

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C

Nitrogen

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D

Oxygen

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Solution

The correct option is A

Carbon dioxide


An explanation for correct option (a)

(a) Carbon dioxide-

  • It is used for photosynthesis in plants.

The explanation for incorrect options

(b) Nitrogen-

  • It is not used for photosynthesis in plants.
  • It is an important component of proteins for all living beings.

(c) Oxygen-

  • It is not used for photosynthesis in plants.
  • It supports combustion and so it is necessary for burning.

(d) Methane-

  • It is not used for photosynthesis in plants.
  • It is a greenhouse gas that helps to maintain the right temperature of the earth.

Option (a) is the correct option as Carbon dioxide is necessary for photosynthesis in plants.


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