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ICSE Class 10 Biology Question 10 of 10

Transpiration — Question 8

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Question 8

The figure given below is a transverse section of an old woody stem. It shows very minute openings labelled - A on its surface.

The figure given below is a transverse section of an old woody stem. It shows very minute openings labelled - A on its surface. Cell Cycle, Cell Division, Chromosomes, Concise Biology Solutions ICSE Class 10.

(a) What are these tiny openings called?

(b) Mention two significant functions of these openings.

(c) Name two other tiny openings which can be found on the surface or margins of leaves.

Answer

(a) These tiny openings are called lenticels.

(b) Two functions of lenticels -

  1. They facilitate transpiration.
  2. They allow exchange of gases.
    s (c) Stomata and hydathodes.