Which of the following statement is not correct regarding guard cells?

Easy

A

The immediate cause of the opening or closing of stomata is a change in the turgidity of the guard cells.
B

The outer walls of guard cells are thin, and the inner walls are highly thickened.
C

The guard cells possess chloroplasts.
D

In grasses guard cells are dumb bell shaped and is present in the endodermis of the leaves.

Solution

In grasses guard cells are dumbbell shaped and is present in the epidermis of the leaves. The guard cells possess chloroplasts and regulate the opening and closing of stomata. The outer walls of guard cells (away from the stomatal pore) are thin and the inner walls (towards the stomatal pore) are highly thickened.

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