Photosynthesis Question 72
72. Glycolate induces opening of stomata in
(a) presence of oxygen
(b) low $CO_2$ conc.
(c) high $CO_2$ conc.
(d) absence of $CO_2$
Show Answer
Answer : b
Hints & Solution
(b) Light causes photosynthesis which leads to reduction in $CO_2$ concentration $\rightarrow$ oxidation of glycolate $\rightarrow$ ATP synthesis $\rightarrow$ activation of $K^{+}$pump $\rightarrow$ movement of $K^{+}$in guard cell $\rightarrow$ movement of water into guard cell $\rightarrow$ swelling of guard cell $\rightarrow$ opening of stomata.
