Glycolate induces opening of stomata in:
Correct answer: B. Low CO2 concentration
- A. Presence of oxygen
- B. Low CO2 concentration
- C. High CO2 concentration
- D. CO2 absent
Explanation
Zelitch (1963) suggested that glycolic acid is formed in the guard cells. This acid is formed under a low concentration of CO. Glycolate formed gives rise to carbohydrates. Under this condition, the osmotically active material is produced and ATP synthesis also takes place. ATP is produced during the glyoxylate glycolate shuttle. This ATP helps in the active pumping of water in the guard cells and stomata open. Stomata close when this process is reversed. So option B is correct.
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