NEET 2001 Biology question

Glycolate induces opening of stomata in : -

(1)Presence of oxygen
(2)Low CO2 conc.Correct
(3)High CO2
(4)CO2 absent

Answer: (2)

Solution

Stomatal opening is promoted when the CO2 concentration in the guard-cell intercellular spaces is low (during photosynthesis). Glycolate, a product of photorespiration, is reported to stimulate stomatal

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Question ID VK-088888