Question

Select correct statements from the following.
(a) Lenticels are absent in woody climbers.
(b) Lenticels occur in most woody trees.
(c) The spring wood is lighter in colour and has a lower density.
(d) The sap wood also called as duramen.

• A. a, b and c are correct
• B. a and b are correct
• C. b and d are correct
• D. a and c are correct

Answer 1

The correct option is A a, b and c are correct

A lenticel is a porous tissue consisting of cells with large intercellular spaces in the periderm of the secondarily thickened organs and the bark of woody stems and roots of dicotyledonous flowering plants. It functions as a pore, providing a pathway for the direct exchange of gases between the internal tissues and atmosphere through the bark, which is otherwise impermeable to gases. Lenticels are absent in woody climbers.

Heart wood is also called as 'duramen'. The spring wood is lighter in colour and has a lower density. Thus, option A is correct.