Optimum temperature of photosynthesis is

10 - 15^{\circ} C

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20 - 25^{\circ} C

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20 - 35^{\circ} C

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35 - 50^{\circ} C

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Solution

The correct option is C $20 - 35^{\circ} C$
The plants can perform photosynthesis in a range of temperature only. While some cryptophytes can do photosynthesis at temperatures as low as minus 35 degree centigrade, some thermal algae can do photosynthesis at temperatures as high as 75 degree celsius. Usually the plants can perform photosynthesis in the range of 10 to 40 degree celsius. The optimum temperature range is 25 to 30 degree celsius.

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