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Factors Affecting Photosynthesis

If we keep on...

Question

If we keep on increasing $C O_{2}$ concentration in air what will be the rate of photosynthesis?

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Solution

Increase in $C O_{2}$ increases that rate of photosynthesis but only if not limited by other factors like light and temperature. This increase is observed up to 1% of $C O_{2}$ concentration.

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Q. If we keep on increasing CO² concentration in the air what will be the rate of photosynthesis?

Assertion: $C_{3}$ plants respond to increased $C O_{2}$ concentration by increasing rate of photosynthesis.

Reason: The higher productivity of some greenhouse crops such as tomatoes and bell pepper is due to increased $C O_{2}$ concentration.

Q. Attack of asthama in certain persons may be due to
(a) eating of some seasonal vegetation
(b) inhalation of some air-borne pollen
(c) exposure to cold temperature
(d) low concentration of CO₂ due to increase rate of photosynthesis

Q. Describe briefly the effect of light,

C O_{2}

concentration, and temperature on the rate of photosynthesis.

Q. What will be the effect of increased concentration of

C O_{2}

in blood on normal breathing?

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Factors Affecting Photosynthesis

Standard XII Biology

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