Xylem and phloem — Paper 2 · IGCSE Biology (9-1) 0970

15 The diagram shows part of a section through a plant stem. Which tissue transports water from the roots to the leaves? A B C D

1 marks

Answer: C

This question in 0970/21 May/June 2018

16 A celery stalk was placed into a beaker of blue dye. When the dye reached the leaves, the stalk was taken out and a section was cut, as shown in the diagram. celery stalk cut blue dye Which diagram shows the appearance of the cut end of the stalk? A B C D blue dye blue dye blue dye

1 marks

Answer: B

This question in 0970/21 May/June 2019

18 The diagram shows some of the transport tissues in a plant root. Y Z Which row about tissues Y and Z in the diagram is correct? tissue Y tissue Z name transports name transports A phloem mineral ions & water xylem sucrose B phloem sucrose xylem mineral ions & water C xylem mineral ions & water phloem sucrose D xylem sucrose phloem mineral ions & water

1 marks

Answer: C

This question in 0970/21 May/June 2019

5 The diagram shows a xylem vessel in a plant stem. The magnification is ×400. X X Y Y ×400 What is the actual width of the xylem vessel along the line XY? A 8.75 µm B 14 µm C 87.5 µm D 140 µm

1 marks

Answer: C

This question in 0970/22 May/June 2019

16 A celery stalk was placed into a beaker of blue dye. When the dye reached the leaves, the stalk was taken out and a section was cut, as shown in the diagram. celery stalk cut blue dye Which diagram shows the appearance of the cut end of the stalk? A B C D blue dye blue dye blue dye

1 marks

Answer: B

This question in 0970/22 May/June 2019

16 Dodder is a plant that grows on other plants called the hosts. The dodder plant connects to the host’s vascular bundles. The dodder plant does not have green leaves or roots. What correctly describes the regions for translocation? host leaves dodder A sink sink B sink source C source sink D source source

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

3 The diagram shows some tissues in part of a plant root. The arrows represent the movement of water into and across the plant root tissues. How many different tissues are shown? A 2 B 4 C 5 D 7

1 marks

Answer: B

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

15 The diagram shows a cross-section of part of a plant. H Which part of the plant is shown and what is the tissue labelled H? plant part tissue H A root phloem B root xylem C stem phloem D stem xylem

1 marks

Answer: A

This question in 0970/22 May/June 2022

16 Scientists investigate the movement of substances in a plant. They cut a ring of tissue from the stem. Removing the tissue removes some of the transport vessels found around the edge of the stem. A few days later they notice swelling above the area where the tissue has been removed. leaves tissue removed time swelling roots What causes the swelling? A Phloem vessels have been removed and sucrose cannot move to the sink. B Phloem vessels have been removed and sucrose cannot move to the source. C Xylem vessels have been removed and minerals cannot move to the sink. D Xylem vessels have been removed and minerals cannot move to the source.

1 marks

Answer: A

This question in 0970/22 Oct/Nov 2022

16 Sucrose and amino acids move around a plant from sources to sinks. Which row shows the sources and sinks? palisade root cortex cells xylem vessels mesophyll cells A source and sink neither source B sink sink source and sink C neither source and sink sink D source and sink source neither

1 marks

Answer: A

This question in 0970/21 May/June 2023

16 During an investigation into the movement of substances in a plant, a ring of tissue containing the outer part of the transport tissue is removed, as shown. swelling time epidermis and outer part of transport tissue Which statement explains why a swelling develops in the stem? A Phloem has been removed causing a build up of sucrose and amino acids. B Phloem has been removed causing a build up of water and mineral ions. C Xylem has been removed causing a build up of sucrose and amino acids. D Xylem has been removed causing a build up of water and mineral ions.

1 marks

Answer: A

This question in 0970/22 May/June 2023

17 The photograph shows a cross-section through a sunflower stem. Z What is the name and function of the tissue labelled Z? name of tissue function of tissue A phloem transport of mineral ions B phloem transport of sucrose C xylem transport of mineral ions D xylem transport of sucrose

1 marks

Answer: C

This question in 0970/22 Oct/Nov 2023

17 The table shows the transport tissues of plants and some substances that may or may not travel through these tissues. Which row is correct for translocation? substance plant tissue transported A phloem maltose B phloem sucrose C xylem amino acids D xylem water

1 marks

Answer: B

This question in 0970/22 Oct/Nov 2024

14 Which row shows the features of xylem vessels? mitochondria vessel walls present A thick yes B thick no C thin yes D thin no

1 marks

Answer: B

This question in 0970/22 May/June 2025

10 A student cut one stalk of celery from a celery plant. They put the celery stalk into a beaker of blue dye. The celery stalk was removed from the blue dye after two hours and was cut into sections. celery stalk blue dye two hours blue circles visible in the cut section What is shown by the blue circles in the cut sections of celery stalk? A position of the cortex cells B position of the palisade cells C position of the phloem cells D position of the xylem vessels

1 marks

Answer: D

This question in 0970/22 Oct/Nov 2025