Question

What are the two factors that control the stomatal opening?

Answer 1

Factors Affecting Opening and Closing of Stomata: 4 Factors

Light: Among external factors, light plays predominant role in the movement of guard cells. ...

Water Content of Epidermal Cells: ADVERTISEMENTS: ...

Temperature: Increase in the temperature causes stomata to open. ...

Mineral Elements:

Answer 2

Explanation:

The opening and closing of stomata is the function of guard cell .The guard cells swell when water flows into it cause stomata pores to open .The pores closes due to cell srink as large amount of water is lost through stomata .