Back to Chapter 9
Mark schemePDF

Chapter 9 Practice Paper: Photosynthesis and limiting factors — question paper

QuizQuipPractice Series
QQ/GCSE-BIO/CH9

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

Chapter 9 Practice Paper

Photosynthesis and limiting factors

Duration: 40 minutes
Total: 30 marks
Name:
Class:
Register No.:
Date:

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 9: the photosynthetic reaction, limiting factors of light, CO₂ and temperature, inverse square law (Higher), the pondweed required practical, the five fates of glucose, and greenhouse economics.

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

    Photosynthesis produces

    1. Aglucose and carbon dioxide
    2. Bglucose and oxygen
    3. Cprotein and water
    4. Dstarch and nitrogen
    ( )
  2. 2

    The reaction takes place in the

    1. Amitochondria
    2. Bnucleus
    3. Cchloroplasts
    4. Dvacuole
    ( )
  3. 3

    Which factor does NOT limit photosynthesis?

    1. Alight intensity
    2. BCO₂ concentration
    3. Ctemperature
    4. Dsoil pH
    ( )
  4. 4

    Above the optimum temperature the rate falls because enzymes

    1. Amultiply
    2. Bdenature
    3. Cdigest chlorophyll
    4. Dstore starch
    ( )
  5. 5

    (Higher) At twice the distance from a lamp, the intensity is

    1. Aunchanged
    2. Bhalf
    3. Cone quarter
    4. Done ninth
    ( )
  6. 6

    The bubbles in the pondweed practical are

    1. Acarbon dioxide
    2. Boxygen
    3. Cwater vapour
    4. Dglucose vapour
    ( )
  7. 7

    Glucose is stored as starch because starch is

    1. Ainsoluble
    2. Bsoluble
    3. Ca protein
    4. Da gas
    ( )
  8. 8

    Amino acids need glucose combined with

    1. Anitrate ions
    2. Boxygen
    3. Ccellulose
    4. Dstarch
    ( )
  9. 9

    Trials at one distance gave 30, 34 and 32 bubbles in a minute. The mean rate is

    1. A30
    2. B31
    3. C32
    4. D96
    ( )
  10. 10

    A greenhouse input is worth installing only if

    1. Ait raises the rate at any cost
    2. Bit looks impressive
    3. Cit works in winter only
    4. Dthe extra crop value exceeds its cost
    ( )

Section B: Structured questions[20 marks]

Answer all questions in the spaces provided.

  1. 11

    This question is about the photosynthesis reaction.

    1. (a)

      Write the word equation for photosynthesis.

      [2]
    2. (b)

      Explain why photosynthesis is endothermic.

      [2]
    3. (c)

      Name the pigment that absorbs the light.

      [1]
  2. 12

    A pondweed shoot is tested at different lamp distances.

    Mean bubble rate

    Distance (cm)Bubbles per minute
    1044
    2040
    3012
    405
    1. (a)

      Describe the overall trend.

      [2]
    2. (b)

      Suggest what is limiting between 10 and 20 cm.

      [1]
    3. (c)

      Explain why the rate is much lower at 30 and 40 cm.

      [2]
    4. (d)

      State one improvement to this investigation.

      [1]
  3. 13

    (Higher) A lamp produces an intensity of 900 units at 15 cm.

    1. (a)

      Calculate the intensity at 30 cm.

      [2]
    2. (b)

      Calculate the intensity at 45 cm, to 3 significant figures.

      [2]
  4. 14

    This question is about glucose and greenhouse growing.

    1. (a)

      Describe three uses of glucose in a plant.

      [3]
    2. (b)

      A grower spends £8 000 on CO₂ enrichment and gains crops worth £11 500. Calculate the net gain.

      [2]

— End of paper —