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Chapter 6 Practice Paper: Plant tissues and transport — question paper

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QQ/GCSE-BIO/CH6

GCSE (9–1) · GCSE Biology (Foundation and Higher)

Chapter 6 Practice Paper

Plant tissues and transport

Duration: 40 minutes
Total: 30 marks
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READ THESE INSTRUCTIONS FIRST

  • Answer all questions.
  • Section A contains ten multiple-choice questions. Choose one answer, A, B, C or D, for each.
  • Section B contains structured questions. Write your answers in the spaces provided.
  • You may use a calculator.
  • The number of marks is given in brackets [ ] at the end of each question or part question.
  • The total mark for this paper is 30.

Original practice material written for the MOE GCSE Biology syllabus. It is not an official MOE or school examination paper. Chapter 6: leaf tissues and the leaf as an organ, root hair cells, xylem and phloem adaptations, transpiration and translocation, stomata and guard cells, transpiration-rate factors, and rate and mean calculations.

For Examiner’s Use
Section A/ 10
Section B/ 20
Total/ 30

Section A: Multiple-choice questions[10 marks]

Choose one answer for each question. Each question is worth 1 mark.

  1. 1

    Which tissue transports dissolved sugars in a plant?

    1. Axylem
    2. Bpalisade mesophyll
    3. Cphloem
    4. Depidermis
    ( )
  2. 2

    Xylem vessels are able to withstand tension because their walls contain

    1. Achlorophyll
    2. Blignin
    3. Cstarch
    4. Dcell sap
    ( )
  3. 3

    Most photosynthesis happens in the

    1. Aspongy mesophyll
    2. Bpalisade mesophyll
    3. Croot epidermis
    4. Dwaxy cuticle
    ( )
  4. 4

    Water evaporates out of the leaf mainly through the

    1. Astomata
    2. Bcuticle
    3. Croot cap
    4. Dsieve plates
    ( )
  5. 5

    Guard cells close a stoma when they

    1. Afill with water
    2. Bdivide by mitosis
    3. Cproduce lignin
    4. Dlose water and become flaccid
    ( )
  6. 6

    Raising humidity around a leaf

    1. Adecreases transpiration
    2. Bincreases transpiration
    3. Cstops photosynthesis
    4. Draises the uptake of ions
    ( )
  7. 7

    The waxy cuticle’s function is to

    1. Aabsorb light
    2. Battract pollinators
    3. Creduce water loss
    4. Dtransport ions
    ( )
  8. 8

    A shoot loses 4.5 cm³ of water in 30 minutes. Its transpiration rate is

    1. A4.5 cm³ per hour
    2. B135 cm³ per hour
    3. C0.15 cm³ per hour
    4. D9 cm³ per hour
    ( )
  9. 9

    Which pair correctly matches tissue and job?

    1. Aspongy mesophyll — light absorption
    2. Bxylem — carrying dissolved sugars
    3. Cphloem — carrying dissolved sugars
    4. Dupper epidermis — housing most stomata
    ( )
  10. 10

    Mineral ions are carried to the leaves by

    1. Athe phloem, downwards
    2. Bthe xylem, upwards
    3. Cthe cuticle, sideways
    4. Ddiffusion through the air
    ( )

Section B: Structured questions[20 marks]

Answer all questions in the spaces provided.

  1. 11

    Explain how the structure of each transport cell or tissue suits its function.

    1. (a)

      Root hair cell.

      [2]
    2. (b)

      Xylem.

      [2]
    3. (c)

      Phloem.

      [2]
  2. 12

    A leafy shoot was exposed to different conditions; water uptake over 20 minutes is shown.

    Uptake under different conditions

    ConditionUptake in 20 min (cm³)
    Calm, humid air2.0
    Calm, dry air4.0
    Fan on, dry air7.0
    1. (a)

      Calculate the uptake rate in the fan-on condition, in cm³ per hour.

      [2]
    2. (b)

      Describe the effect of changing the air from humid to dry.

      [1]
    3. (c)

      Explain why the fan increased uptake further.

      [2]
  3. 13

    This question is about stomata and guard cells.

    1. (a)

      State where most stomata are found and name the cells that control them.

      [2]
    2. (b)

      Explain how the stomata open.

      [1]
    3. (c)

      Explain why a plant closes its stomata at night even though photosynthesis has stopped.

      [2]
  4. 14

    A leaf peel was sampled for stomata in six fields of view: 12, 10, 13, 11, 12 and 16.

    1. (a)

      Use all six counts to find the mean stomata count for one field.

      [2]
    2. (b)

      Explain why the mean is more useful than a single count.

      [1]
    3. (c)

      Each field of view was 0.5 mm². Estimate the stomata density per mm².

      [1]

— End of paper —