Water uptake — Paper 2 · 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 0970/21 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 0970/21 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 0970/22 Oct/Nov 2018

15 Which change increases the rate of water uptake by the roots of a plant? A decrease in evaporation of water from mesophyll cells B decrease in length of root hairs C decrease in water potential of root hair cells D decrease in water potential of soil water

1 marks

Answer: C

This question in 0970/22 May/June 2020

15 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 0970/22 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 0970/21 May/June 2021

17 Which sequence describes the pathway taken by water as it moves through a plant? A root hair cell  xylem  root cortex cell  mesophyll B mesophyll  xylem  root cortex cell  root hair cell C root cortex cell  root hair cell  xylem  mesophyll D root hair cell  root cortex cell  xylem  mesophyll

1 marks

Answer: D

This question in 0970/22 May/June 2021

7 The diagram shows the uptake of mineral ions by root hair cells. inside root hair cell X cell membrane energy mineral ion passing into the root hair cell from the soil Which type of molecule is labelled X in the diagram? A glucose B lipid C protein D starch

1 marks

Answer: C

This question in 0970/22 Oct/Nov 2021

15 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 0970/21 May/June 2022

12 The substances listed are found in the leaf of a plant. Which substance is obtained from the soil? A carbon dioxide B chlorophyll C glucose D mineral ions

1 marks

Answer: D

This question in 0970/22 Oct/Nov 2022

15 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 0970/22 Oct/Nov 2022