The diagram depicts three plant cells named P, Q and R. The arrows indicate the direction in which water moves by osmosis. What is the correct sequence of water potential in the cells, from highest to lowest?
- Ahighest: P; middle: Q; lowest: R
- Bhighest: P; middle: R; lowest: Q
- Chighest: Q; middle: P; lowest: R
- Dhighest: R; middle: P; lowest: Q