Guttation occurs in

$A-$ The inner wall of each guard cell,towards the pore or stomatal aperture,is thick and elastic.
$R -$ Cellulose microfibrils are oriented longitudinally in the cell walls of the guard cells.

Choose the incorrect sentence regarding the compromise between transpiration and photosynthesis.

Stomata in angiosperms open and close due to

Which type of transpiration continues throughout day and night?

In hot summer days,plant cooling is due to