Increase in CO2 concentration around leaf results in
(a) rapid opening of stomata.
(b) partial closure of stomata.
(c) complete closure of stomata.
(d) no effect on stomatal opening.

Dear student

Please refer the solution below for the said query

The correct option is (b).

The CO2 acts as anti-transpirant. The increase in the concentration of CO2 outside the leaves decreases the stomatal aperture and hence induces partial closure of the stomata. This in turn reduces transpiration.

Hope this information clears your doubt about the topic.


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