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CAIE IGCSE Biology 16.4 Human Sexual Reproduction Question Bank

Practise human reproduction questions by labelling reproductive organs, comparing gamete adaptations and tracing fertilisation, implantation and fetal exchange.

Syllabus
2026–2028
Course
Biology 0610

Exam points

  • match male and female reproductive organs to gamete production, transport and fertilisation
  • compare sperm and egg adaptations using flagella, mitochondria, acrosomes and jelly coats
  • interpret placenta and umbilical-cord exchange of gases, nutrients, urea, pathogens and toxins

16.4 Sexual reproduction in humans question 1

[Maximum number: 3]

Fig. 4.1 is a photograph of a bee on a flower. One of the bee's legs is covered with pollen.

Fig. 4.1

Fig. 4.1

Question (a)

(a)

Sexual reproduction also occurs in humans.

[ 3 ]

Question (i)

(i)

State the name of the male gamete in a human.

[ 1 ]

Question (ii)

(ii)

State where gametes are formed in the human male reproductive system.

[ 1 ]

Question (iii)

(iii)

Describe the function of the prostate gland in the male reproductive system.

[ 1 ]

16.4 Sexual reproduction in humans question 2

[Maximum number: 10]

Fig. 5.1 is a photograph of a koala.
Koalas are marsupial mammals that give birth to offspring that are incompletely developed.
The offspring develops further for several months inside the pouch of the mother.

Fig. 5.1

Fig. 5.1

Question (a)

(a)

Fig. 5.2 is a diagram of part of the human female reproductive system, viewed from the side of the body.

Fig. 5.2

Fig. 5.2

Complete Table 5.1 by writing the letters that identify the structures in Fig. 5.2, the names of the structures and the functions.

Table 5.1

Table 5.1

[ 4 ]

Question (b)

(b)

Pregnant human females have a placenta.

[ 6 ]

Question (i)

(i)

Describe the function of the placenta in humans.

[ 4 ]

Question (ii)

(ii)

The placenta is connected to the amniotic sac.

State two functions of the amniotic fluid that is found in the amniotic sac.
1

2

[ 2 ]

16.4 Sexual reproduction in humans question 3

[Maximum number: 1]

When does fertilisation occur in humans?

A

when an egg is released

B

when implantation occurs

C

when sperm and egg nuclei fuse

D

when sperm are released

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