Question

What is lenticular transpiration ? Mention one major difference between lenticular transpiration and stomatal transpiration.

Answer 1

Loss of water that takes place through lenticels which are small minute pores present on the stem of many woody plants is called lenticular transpiration

A lenticel is a porous tissue consisting of cells with large intercellular spaces in the periderm. They do not have guard cells and the loss of water is about 1% only.

In stomatal transpiration, the loss of water is more steep at about 90% . Stomatal openings are guarded by guard cells.