Half leaf experiment proves that:

Chlorophyll is essential for photosynthesis.

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O_{2}

is released during photosynthesis.

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C O_{2}

is essential for photosynthesis.

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Light is essential for photosynthesis.

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Solution

The correct option is C $C O_{2}$ is essential for photosynthesis.
Moll's half-leaf experiment proves that $C O_{2}$ is essential for photosynthesis. A part of the leaf is enclosed in a test tube containing KOH absorbed cotton. KOH absorbs $C O_{2}$ , while the other half is exposed to air. This setup is placed under light for some time and a starch test is carried out. The half portion inside the tube tested negative for starch as there was no $C O_{2}$ which is required for photosynthesis.

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why it is called as mohls half leaf experiment?

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