Q821
High CO2 concentration in leaf interior will cause
A.
Stomatal opening
B.
Stomatal closure
AnswerC.
No effect on stomata
D.
Stomata are destroyed
Answer: Option B
Solution
Answer: Option B
Solution:
High CO2 concentration in the leaf interior will cause Stomatal closure.Higher than ambient CO2 concentrations mediate a closure of stomatal pores in plants and conversely, low CO2 concentrations trigger the opening of stomatal pores.
Stomatal opening is induced by low CO2 concentrations, high light intensity and high humidity. By contrast, closing is promoted by high CO2 concentrations, darkness, drought and the plant hormone ABA.