The opening and closing of the stomatal pore depends upon (a) oxygen (b) temperature (c) water in guard cells concentration of CO2 in stomata

• Soln:

Answer is (c) water in guard cells

Explanation:

Opening of guard cells is facilitated by the entry of water inside guard cells. This make the guard cell become turgid. Closing of guard cells is facilitated by water coming out of guard cells. This will make the guard cells flaccid.