In an experiment on $O_{2}$ evolution by photosynthesising Hydrilla plant, a pinch of sodium bicarbonate is added to water. The rate of photosynthesis or $O_{2}$ evolution will

Increase

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Decrease

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Stop

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Not be affected

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Solution

The correct option is C Increase
When Sodium bicarbonate breaks down it releases carbon dioxide which is, in fact, the raw material for photosynthesis.
As the amount of carbon dioxide increases the release of oxygen also increases and so the rate of photosynthesis.
So, the correct option is 'Increase'

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In an experiment on O2 evolution by photosynthesising Hydrilla plant, a pinch of sodium bicarbonate is added to water. The rate of photosynthesis or O2 evolution will

The correct option is C IncreaseWhen Sodium bicarbonate breaks down it releases carbon dioxide which is, in fact, the raw material for photosynthesis.As the amount of carbon dioxide increases the release of oxygen also increases and so the rate of photosynthesis.So, the correct option is 'Increase'

In an experiment on $O_{2}$ evolution by photosynthesising Hydrilla plant, a pinch of sodium bicarbonate is added to water. The rate of photosynthesis or $O_{2}$ evolution will