Q. Enzyme connected with stomatal opening is :
(a) Pyruvic kinase
(b) Cytochrome oxidase
(c) PEP carboxylase
(d) RuBISCO
Solution :
Correct option : C (A) α-amylase helps to hydrolyse the starch. (B) The pyruvic kinase is the enzyme catalysing the final step of glycolysis for the production of pyruvic acid.
(C) Enzyme PEP carboxylase is connected with the opening and closing of stomata as it helps in the malate synthesis which is associated with closing and opening of stomata. (D) RuDP carboxylase helps PEP carboxylase in the fixation of carbon dioxide in c4 plants. So, the correct answer is ‘PEP carboxylase’.
