Question

Wall thickenings
Nucleus
Vacuole
Cell wall
b (1)​

Answer 1

Answer:

CELL WALL

Explanation:

Nucleus and Vacuole have a cell membrane, but they don't have a thick wall

but the Cell wall has a very thick wall, made of a complex carbohydrate known as Cellulose. The Cell wall makes the cell turgid and maintains it

shape, and also protects the internal components of the cell from injury.

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