Water uptake — Paper 1 · IGCSE Biology (9-1) 0970

6 Why do some root cells have root hairs? A for the maintenance of the temperature of the cell sap B to increase the surface area of the cells C to increase the volume of the cell sap D to provide a place for cell nuclei

1 marks

Answer: B

This question in 0970/11 May/June 2018

8 Which part of a plant root hair is partially permeable? A the cell sap B the cell surface membrane C the cell vacuole D the cell wall

1 marks

Answer: B

This question in 0970/11 May/June 2018

15 The diagram shows a plant cell. What type of plant cell is this? A guard cell B mesophyll cell C root cortex cell D root hair cell

1 marks

Answer: D

This question in 0970/12 Oct/Nov 2018

13 After passing through the root hair cells of a plant, what is the next tissue through which water passes? A cortex B epidermis C mesophyll D xylem

1 marks

Answer: A

This question in 0970/11 May/June 2020

13 After passing through the root hair cells of a plant, what is the next tissue through which water passes? A cortex B epidermis C mesophyll D xylem

1 marks

Answer: A

This question in 0970/12 May/June 2020

17 In which order does water pass through these structures in a plant? A mesophyll  root hair  xylem B mesophyll  xylem  root hair C root hair  mesophyll  xylem D root hair  xylem  mesophyll

1 marks

Answer: D

This question in 0970/12 Oct/Nov 2020

17 The diagram shows part of a cross-section of a root. 2 1 3 What are cells 1, 2 and 3? 1 2 3 A root cortex cell root hair cell mesophyll cell B root hair cell root cortex cell xylem C root hair cell root cortex cell mesophyll cell D root cortex cell root hair cell xylem

1 marks

Answer: B

This question in 0970/11 May/June 2021

17 A non-woody plant stem is placed in water containing a red dye. It is left for one day and then a section of the stem is examined using a microscope. Which tissue is stained red? B C D A

1 marks

Answer: D

This question in 0970/11 May/June 2022

17 The diagram shows a bean seedling soon after it has germinated. Where is most water absorbed? A B C D

1 marks

Answer: C

This question in 0970/12 Oct/Nov 2022

18 What is the effect on a plant of not having any root hairs? A The plant absorbs less water from the soil. B The plant absorbs more water from the soil. C The plant loses water to the soil. D The plant loses mineral ions to the soil.

1 marks

Answer: A

This question in 0970/11 May/June 2023

17 Which pathway is taken by water through a plant? A root hair → root cortex → xylem → mesophyll → stomata B root hair → xylem → mesophyll → root cortex → stomata C stomata → root cortex → xylem → mesophyll → root hair D stomata → root hair → root cortex → xylem → mesophyll

1 marks

Answer: A

This question in 0970/12 May/June 2023

38 Scientists studied the uptake of potassium ions from chemical fertilisers by wheat plants. The results are shown. 350 300 250 200 potassium uptake / kg per hectare 150 100 50 0 0 60 120 180 240 300 360 420 days after planting What is the difference in the uptake of potassium ions at 360 days after planting compared to 30 days after planting? A 295 kg per hectare B 290 kg per hectare C 285 kg per hectare D 280 kg per hectare

1 marks

Answer: C

This question in 0970/12 Oct/Nov 2023

21 What is the pathway taken by water from the soil to the leaf? A root hair cells →root cortex →mesophyll →xylem B root hair cells →root cortex →xylem →mesophyll C root cortex→root hair cells →mesophyll →xylem D root cortex →root hair cells→xylem →mesophyll

1 marks

Answer: B

This question in 0970/11 May/June 2024

20 Which statement describes transpiration? A Water is pulled upwards by active transport. B Water is pulled up from the roots by phloem. C Water moves by osmosis inside the xylem vessels. D Water vapour diffuses out of the leaves.

1 marks

Answer: D

This question in 0970/12 May/June 2024

8 Which statement about plant support is correct? A The pressure of water inside the cells presses inwards on the cell walls. B The pressure of water inside the cells presses outwards on the cell walls. C The pressure of water outside the cells presses inwards on the cell walls. D The pressure of water outside the cells presses outwards on the cell walls.

1 marks

Answer: B

This question in 0970/12 Oct/Nov 2024

13 Which pathway is taken by water from the roots to the leaves? A root cortex cells  root hair cells  mesophyll cells  xylem B root cortex cells  root hair cells  xylem  mesophyll cells C root hair cells  root cortex cells  mesophyll cells  xylem D root hair cells  root cortex cells  xylem  mesophyll cells

1 marks

Answer: D

This question in 0970/12 Oct/Nov 2025