Question

Name the following:

Permanently open structures seen on the bark of an old woody stem.

Answer 1

Lenticels

1. Lenticels are permanent openings in the bark of woody stems.
2. The proportion of lenticular transpiration is hardly 0.1% of the total transpiration.
3. The number of lenticels in a plant is very small.
4. Lenticular transpiration occurs day and night.

Hence, permanently open structures seen on the bark of an old woody stem are called lenticels.