Biology 5090 · O Level
Leaf structure
44 practice questions on Leaf structure, with worked solutions and instant marking.
The diagram depicts cells in a transverse section of a leaf from a typical green plant. (No cell contents are shown.) Which cells normally contain chloroplasts?
May/June 2015
The diagram shows cells in a cross-section of a leaf from a typical green plant. (No cell contents are shown.) Which cells normally contain chloroplasts?
May/June 2015
Describe the importance of the distribution of chloroplasts in the process of photosynthesis in a dicotyledonous leaf.
May/June 2015
The diagram presents a cross-section of a dicotyledonous leaf. Which labelled parts of the leaf perform photosynthesis?
May/June 2016
The diagram shows a magnified cross-section of part of a leaf. In which part does photosynthesis take place?
May/June 2016
The diagram illustrates cells taken from a plant leaf. Which structure has a high concentration of magnesium?
May/June 2017
The diagram shows a magnified transverse section of a leaf.
May/June 2018
What is the role of the upper cuticle of a leaf?
May/June 2021
Which term is used to describe the upper cuticle of a leaf?
May/June 2021
A species of plant is found in ponds. The diagrams present the complete plant and a transverse section through one of its leaves.
May/June 2022
The diagram illustrates a section of a leaf cut across its width. What are the chief functions of the three labelled regions?
May/June 2023
The diagram shows a cross-section through part of a leaf from a dicotyledonous plant. Which cells perform photosynthesis?
May/June 2023
Fig. 2.1 shows a photograph of a leaf from a potato plant.
May/June 2023
The diagram illustrates a cross-section of a leaf. What are the functions of the parts labelled 1, 2, 3 and 4?
May/June 2024
The diagram displays part of a leaf. Which numbers show cells in which both photosynthesis and gas exchange take place?
May/June 2024
The diagram depicts a transverse section of a leaf. In which areas of the leaf can photosynthesis occur?
May/June 2025
Photosynthesis and transpiration are two processes carried out in a plant leaf.
May/June 2025
Which section of a leaf contains cells, but has the smallest number of chloroplasts?
Oct/Nov 2015
What features of the mesophyll layer in a leaf help carbon dioxide diffuse rapidly into the cells?
Oct/Nov 2015
The diagram illustrates the upper layers of a leaf. Which structures are labelled X and Y?
Oct/Nov 2015
Fig. 5.1 shows a plant growing in soil that has been well watered.
Oct/Nov 2015
Fig. 4.1 illustrates a transverse section of a plant leaf.
Oct/Nov 2015
By what pathways do carbon dioxide and water enter a leaf?
Oct/Nov 2016
One tissue in a leaf was described as ‘loosely packed cells with a film of moisture on their surface that dissolves gases so the gases can diffuse into the cells’. Which tissue is being described here?
Oct/Nov 2016
The diagram illustrates cells in the epidermis of a leaf. To finish the diagram, which structures need to be added to cells P and Q?
Oct/Nov 2017
Which term is used to describe the upper cuticle of a leaf?
Oct/Nov 2017
The diagram illustrates cells from the epidermis of a leaf. To complete the diagram, which structural features need to be added to cells P and Q?
Oct/Nov 2017
Which term is used to describe the leaf’s upper cuticle?
Oct/Nov 2017
Four kinds of cell found in the leaf of a green plant are shown below. 1 epidermal cells (guard cells not included) 2 guard cells 3 palisade mesophyll cells 4 spongy mesophyll cells Which of these cells contain chloroplasts?
Oct/Nov 2018
The diagram illustrates some of the structures visible in a transverse section of a dicotyledonous leaf. Which two features are absent from this diagram?
Oct/Nov 2019
By what route do carbon dioxide and water enter a leaf?
Oct/Nov 2020
Which part of a leaf takes in and uses carbon dioxide from the air?
Oct/Nov 2020
In what way do carbon dioxide and water enter a leaf?
Oct/Nov 2020
The diagram illustrates how cells are organised within a green leaf. The brackets label different cell types. No cell contents are shown. Which types of cells have chloroplasts?
Oct/Nov 2021
The diagram illustrates how the cells are organised inside a green leaf. The brackets identify different cell types. No internal cell structures are shown. Which cell types contain chloroplasts?
Oct/Nov 2021
The diagram presents a photomicrograph of the lower side of a leaf.
Oct/Nov 2021
The diagram displays cells taken from a plant leaf. Which structure has a high concentration of magnesium?
Oct/Nov 2022
A light microscope view shows a leaf in cross-section.
Oct/Nov 2022
The diagram illustrates an aphid feeding on sugar inside a leaf. As the aphid feeds, what is the sequence in which its mouthparts move through the leaf tissues?
Oct/Nov 2023
Fig. 6.1 shows a plant leaf in cross-section.
Oct/Nov 2023
The diagram shows a cross-section of a dicotyledonous leaf. Which cell is unable to photosynthesise?
Oct/Nov 2024
The diagram shows a cross-section of a leaf. What is the primary function of the region labelled X?
Oct/Nov 2024
What changes take place in the air spaces of a green leaf during a sunny day?
Oct/Nov 2025
The diagram shows a cross-section of a dicotyledonous leaf. Which structures are nearly transparent, helping to raise the rate of photosynthesis in the leaf?
Oct/Nov 2025