Early in the morning,excess of water collects in the form of droplets near the tip of leaves of herbaceous plants,this is due to

$A.$ In dry atmosphere,the relative humidity is low,so the rate of transpiration increases.
$B.$ Slow breeze promotes the rate of transpiration.
$C.$ $ABA$ promotes transpiration.
$D.$ $A$ high salt concentration in soil water increases transpiration.

On the basis of the daily movement of stomata,Loftfield has classified the stomata into:

Identify the cells in the given figure.

Which of the following may be used as an anti-transpirant in plants?

Which of the processes is responsible for the loss of sugars and salts from plants?