Practise human reproduction questions by labelling reproductive organs, comparing gamete adaptations and tracing fertilisation, implantation and fetal exchange.
Fig. 6.1 is a diagram of the human male reproductive system.
Fig. 6.1
Table 6.1 contains information about the male reproductive system shown in Fig. 6.1.
Complete Table 6.1.
Table 6.1
Sperm have adaptive features to carry out their function.
Explain three adaptive features of sperm.
1
2
3
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. 5.2 is a diagram of part of the human female reproductive system, viewed from the side of the body.
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
Pregnant human females have a placenta.
Describe the function of the placenta in humans.
The placenta is connected to the amniotic sac.
State two functions of the amniotic fluid that is found in the amniotic sac.
1
2
When does fertilisation occur in humans?
when an egg is released
when implantation occurs
when sperm and egg nuclei fuse
when sperm are released
Fig. 6.1 is a diagram of the human male reproductive system.
Fig. 6.1
Table 6.1 contains information about the male reproductive system shown in Fig. 6.1.
Complete Table 6.1.
Table 6.1
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. 5.2 is a diagram of part of the human female reproductive system, viewed from the side of the body.
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
Once an egg cell has been released from a follicle it can be fertilised by a sperm cell.
State three adaptive features of a sperm cell.
1
2
3
State the function of the jelly coat that surrounds egg cells.
In humans, why are sperm cells produced in much greater numbers than egg cells?
Many sperm cells are needed to fertilise an egg cell.
Sperm cells are small in size.
Sperm cells are non-motile.
The chance of one sperm cell reaching an egg is very small.
Pregnancy can occur after the fusion of a male gamete and a female gamete.
State the name of the ball of cells that implants into the uterus after fertilisation.
There are many changes that occur in a fetus during pregnancy.
Compare the development of a fetus in the early stages of pregnancy to its development in the late stages of pregnancy.
Describe the functions of amniotic fluid and the amniotic sac.
Fig. 2.2 shows the junction between two neurones with drug X absent and two neurones with drug X present, immediately after a painful stimulus.
Fig. 2.2
State the names of A, B, C and D in Fig. 2.2.
A
B
C
D
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
Pregnant human females have a placenta.
Describe the function of the placenta in humans.
What will happen if a woman smokes during pregnancy?
Nicotine can cross the placenta and affect the fetus.
Nicotine can cause COPD in the lungs of the fetus.
The woman can become addicted to carbon monoxide.
Carbon monoxide can cause cancer in the lungs of the fetus.