Question

Differentiate lenticular and cuticular transpiration?

Answer 1

Lenticular Transpiration -  Happens through lenticel [small opening on the old woody stem]
Cuticular Transpiration - Happens through cutical [outer most covering of plant]

Answer 2

Cuticular Transpiration takes place through the outer covering of epidermis called cuticles which are made of substances called cutins. Only a very little amount of transpiration takes place through this process.

Lenticular transpiration takes place through lenticles which is a region on the bark having loosely arranged cells. A very lesser amount of water is lost in transpiration through lenticles!