Lenticular transpiration takes place in

Guttation occurs through . . . . . . .

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

Stomatal frequency means

Generally,stomata are found on the lower surface of a leaf. Thus,the approximate percentage of transpiration through the abaxial surface is: (in $\%$)

Define the following terms:
$(1)$ Guttation
$(2)$ Transpiration