First slide

The Tissue System

Question

Which of the following statements is not true for stomatal apparatus?

Easy

A

Guard cells invariably possess chloroplasts and mitochondria
B

Guard cells are always surrounded by subsidiary cells
C

Stomata are involved in gaseous exchange
D

Inner wall of guard cells are thick

Solution

Sometimes, a few epidermal cells, in the vicinity of the guard cells become specialised in their shape and size and are known as subsidiary cells. The stomatal aperture, guard cells and the surrounding subsidiary cells are together called stomatal apparatus.

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