The diagram shows the water potential (Y) in some plant cells and in their environment. [Figure 27.1 showing three plant cells and environment with water potential values]
Which statements are correct for this situation?
1 Water moves into and out of all three cells.
2 There is a net movement of water into cell 1.
3 There is no movement of water from the environment to cell 2.
4 Water moves out of cell 3 so it becomes plasmolysed.

Q: What topic does this question test?

This question tests Cell membranes and transport in A-Level Biology (syllabus code 9700). It is worth 1 mark.

Q: Which exam paper is this question from?

This question appeared in the Cambridge A-Level Biology Oct/Nov 2010 examination, Paper 1 Variant 2 (9700_w10_qp_12.pdf).

Question

The diagram shows the water potential (Y) in some plant cells and in their environment. [Figure 27.1 showing three plant cells and environment with water potential values]
Which statements are correct for this situation?
1 Water moves into and out of all three cells.
2 There is a net movement of water into cell 1.
3 There is no movement of water from the environment to cell 2.
4 Water moves out of cell 3 so it becomes plasmolysed.

Oracle Prep · Accepted Answer

The correct answer is A: 1 and 2.

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