Root hair cell

Question 1

root hair cell is a extension of

and its function

Answer 1

The root hair is an extension of the cytoplasm, increasing the surface area of the cell in contact with the soil to maximise absorption of water and minerals

Question 2

Root hair to increase

Answer 2

surface area (SA) so the rate of water uptake by osmosis is greater (can absorb more water and ions than if SA were lower)

Question 3

Thinner walls than other plant cells so that

Answer 3

water can move through easily (due to shorter diffusion distance)

Question 4

Permanent vacuole contains

Answer 4

cell sap which is more concentrated than soil water, maintaining a water potential gradient

Question 5

Mitochondria for

Answer 5

for active transport of mineral ions

Question 6

Remember that chloroplasts are not found in these cells – there’s no

Answer 6

light for photosynthesis underground!