Question

model 2 - osmosis in plant and animal cells
external solution
hypertonic
isotonic
hypotonic
animal cell
crenated
normal
lysed
cell membrane
cell wall
plant cell
plasmolysed
normal
turgid

1. using your knowledge of cells, which type of cells in model 2 - animal or plant - have

a a selectively permeable membrane?
b a permeable, rigid cell wall?

1. the arrows in model 2 show movement of water into and out of the cells. what does the thick - ness of the arrow indicate?

Explanation:

a. Both animal and plant cells have a selectively - permeable membrane. This membrane controls the movement of substances in and out of the cell.
b. Plant cells have a permeable, rigid cell wall. The cell wall provides structural support and protection to the plant cell.
For question 12, the thickness of the arrow in the model likely indicates the relative rate or amount of water movement. A thicker arrow may mean more water is moving in that direction compared to a thinner arrow.

Answer:

a. Both animal and plant cells
b. Plant cells

1. The relative rate or amount of water movement.