Which of the following conditions may be favourable for the wide opening of stomata?

In the mechanism of opening of stomata,the important factor is the

Guard cells differ from epidermal cells in having

Which of the following statements is not true for stomatal apparatus?

Arrange the events of opening stomata in correct sequence and choose the correct option accordingly.
$I.$ Lowering of osmotic potential of guard cells
$II.$ Decline in guard cell solute
$III.$ Rise of potassium ion level in guard cells
$IV.$ Guard cells absorb water from neighbouring epidermal cells
$V.$ Guard cells become flaccid
$VI.$ Guard cells swell and create a pore between them

Rate of transpiration is increased by