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Chapter 5 Practice Paper: Reproduction in Humans — question paper

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QQ/S4CBI/CH5

Secondary 4 · Combined Science (Biology) (G2 / G3)

Chapter 5 Practice Paper

Reproduction in Humans

Duration: 40 minutes
Total: 30 marks
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Class:
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Date:

READ THESE INSTRUCTIONS FIRST

  • Answer all questions.
  • Section A: choose the one correct answer for each multiple-choice question.
  • Section B: answer in the spaces provided; show all necessary working.
  • Give numerical answers to 3 significant figures where appropriate, with units.
  • Biological drawings are not required; describe or label structures in words where asked.
  • The use of a calculator is permitted.

Original practice material written for the MOE Combined Science (Biology) syllabus. It is not an official MOE or school examination paper. Chapter 5 (sexual reproduction; male and female systems; menstrual cycle; fertilisation to implantation; HIV transmission and reduction).

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

Section A: Multiple-choice questions[10 marks]

Choose the one correct answer for each question.

  1. 1

    Fertilisation in humans normally occurs in the

    1. Aovary
    2. Boviduct
    3. Cuterus
    4. Dcervix
    ( )
  2. 2

    The testes lie in the scrotum outside the main body cavity. Sperm production there requires conditions that are

    1. Aat a temperature slightly cooler than the body core
    2. Bat body-core temperature
    3. Cin total darkness
    4. Dwith direct sunlight
    ( )
  3. 3

    A zygote is

    1. Aa gamete with half the genetic material
    2. Bthe single cell formed after gamete nuclei fuse
    3. Cthe uterus lining
    4. Da ball of cells in the ovary
    ( )
  4. 4

    In a 28-day cycle, the egg is released at about day

    1. A1
    2. B7
    3. C14
    4. D28
    ( )
  5. 5

    Which measure reduces HIV transmission by needle use?

    1. Anever sharing needles and using sterile equipment
    2. Bwashing needles in cold water
    3. Csharing needles among family
    4. Dboiling needles weekly
    ( )

Section B: Structured questions[20 marks]

Answer all questions in the spaces provided.

  1. 1

    Two students define sexual reproduction. Student P writes "when a baby grows in the uterus". Student Q writes "the fusion of gamete nuclei to form a zygote, producing genetically dissimilar offspring".

    1. (a)

      State which definition earns full marks and why.

      [2]
    2. (b)

      Explain why offspring from sexual reproduction are genetically dissimilar from both parents.

      [2]
    3. (c)

      Name the male and female gametes.

      [2]
  2. 2

    Structures of the male and female reproductive systems are listed.

    1. (a)

      State the functions of (i) the prostate gland and (ii) the urethra.

      [2]
    2. (b)

      State the functions of (i) the oviduct and (ii) the uterus.

      [2]
    3. (c)

      A student says the cervix and the vagina are the same structure. Comment on the claim.

      [3]
  3. 3

    A woman)s menstrual period begins on 5 June, in a 28-day cycle.

    1. (a)

      On approximately what date is ovulation expected? Show your reasoning.

      [2]
    2. (b)

      Outline what happens in the uterus between day 1 and day 14.

      [2]
    3. (c)

      State the hormone maintaining the lining after ovulation and what happens to it if no fertilised egg implants.

      [3]

— End of paper —