Question

Explain the terms cuticular transpiration and lenticular transpiration.

Answer 1

the respiration that takes place through skin is called cuticular respiration
eg : frog

the respiration that takes place through lenticels or aerial roots are called lenticular respiration. the type of respiration is seen in adapted trees.
eg : mangrove forest

Answer 2

$\Huge\purple{\mathfrak{\underline{\underline{answer}}}}$

→ Stomatal Transpiration

*It occurs through minute pores called stomata present in epidermis of young stem and leaves.

*Loss of water through stomata is called stomatal transpiration.

*Opening and closing of stomata occurs due to osmotic changes in guard cells.

*When the guard cells are turgid, the Stomata get opened.

*When guard cells become flaccid, the Stomata get closed.

→Cuticular transpiration

*It takes place through the cuticle found on the surface of stems and leaves.

*Cuticle is a thin or thick layer on the epidermis of leaves and herbaceous stem.

*Cuticle reduces the use of water, but it is not strictly imprevious to water.

*Cuticular transpiration depends on the thickness of the cuticle.

*Thicker the cuticle less will be the rate of transpiration.

*Cuticular transpiration takes place throughout day and night.

→Lenticular transpiration

* It occurs through the lenticels present in the bark of old stems and pericarps of woody fruits.

* Lenticels are fine pores composed of loosely arranged cells called complementary cells.

* It occurs throughout day and night.