Suitable temperature for active absorption of water by root is

40^{0} C - 45^{0} C

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10^{0} C - 15^{0} C

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20^{0} C - 35^{0} C

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Can take at any temperature

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Solution

The correct option is C $20^{0} C - 35^{0} C$
Active absorption depends on energy expenditure. Active absorption will be more in the temperature range that favours respiration because respiration is the process responsible for the formation of ATP in the cell. A temperature range of 20 to 35 $^{o}$ C is more suitable for the process of respiration.

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