Question

Differentiate between Stomatal transpiration and Lenticular transpiration.

Answer 1

1. Loss of water vapour from stomatas is called stomatal transpiration.
2. Loss of water from lenticels is called lenticular transpiration.

Points of comparison	Stomatal transpiration	Lenticular transpiration
Definition	The loss of water in the form of water vapour from the stomatas is called stomatal transpiration.	The loss of water in the form of water vapour from the lenticels is called lenticular transpiration.
Plant surface involved	Stomatas are small openings found mainly on the surface of leaves and green shoots.	Lenticels are found on the old and stems and fruit covers.
Percentage from total transpiration loss	It amounts for about 85-90 % of total water lost by transpiration.	It amounts for about 1 % of total water lost by transpiration.
Occurrence	It occurs during the day time.	It occurs throughout the day and night.