Presentation College, San Fernando
Form 3 Biology
Cells – Osmosis
Instructions
Answer all questions by typing your answers in the document
1. In an investigation on plant cells and animal cells the changes shown in Figure 1 are observed.
1
Presentation College, San Fernando
(i)
Form 3 Biology
Name and give a definition of the process that causes the change in the appearance of both
cells.
(3 marks)
(ii)
Explain why the process named in (i) above is important to plant cells
(2 marks)
(iii)
The plant cell becomes turgid after one hour. Suggest the type of solution it was placed in.
(1 mark)
(iv)
Why does the animal cell burst if placed in the same solution mentioned in (iii) but the plant
cell does not?
(2 marks)
2
Presentation College, San Fernando
(v)
Form 3 Biology
If both the plant and animal cells lost water, what term is used to describe their appearance?
(2 marks)
Plant cell –
Animal cell –
[Total 10 marks]
END
3