Question

A plant cell is surrounded by a cell wall and a cell membrane. Discuss the

importance of these two envelopes.

Answer 1

CELL MEMBRANE

1. It has fine pores through which substances may enter or leave the cell.
2. The permeability of the cell membrane is selective, i.e. it allows only certain substances to pass through while it prevents others.
3. Separates conteNTS of cell from its surroundings.
4. Maintains shape of the cell (in animal cells ).

CELL WALL

1. It gives shape and a certain degree of rigidity to the cell without interfering with the functions of the cell membrane.

2. It is freely permeable allowing the substances in solution to enter and leave the cell without hindrance.

3. Provides protection

Hope it helps.

Answer 2

Plant cells have a cell wall, a large central vacuole, and plastids such as chloroplasts. The cell wall is a rigid layer that is found outside the cell membrane and surrounds the cell, providing structural support and protection