Explain how water is taken into a plant.

Mark scheme

Marking points from the official mark scheme (Oct/Nov 2017). The mark or mark type is shown in brackets.

1. [4] 1 osmosis / diffusion ;
2. [4] 2 from high to low water potential OR down water potential gradient ;
3. [4] 3 through + cell wall ;
4. [4] 4 through + membrane ;
5. [4] 5 root hair;
6. [6] 1 less energy + released ;
7. [6] 2 less active transport;
8. [6] 3 less ions absorbed OR ions absorbed more slowly ;
9. [6] 4 less nitrate ions + amino acids / protein / growth ;
10. [6] 5 less magnesium + chlorophyll ;
11. [6] 6 less photosynthesis ;
12. [6] 7 less carbohydrate / glucose / sugar / starch (produced) ;