Biology 5090 · O Level
Sexual reproduction in humans
63 practice questions on Sexual reproduction in humans, with worked solutions and instant marking.
At which site does the placenta permit the exchange of materials between the mother and the fetus?
May/June 2016
Which row correctly matches a hormone to its role in the menstrual cycle?
May/June 2016
At what site does the placenta enable the transfer of substances between the mother and the fetus?
May/June 2016
Compared with the few days before ovulation, which hormone is secreted in greater amounts three days after ovulation?
May/June 2016
Fig. 2.1 illustrates a fetus growing within its mother.
May/June 2016
What route do sperm cells follow during ejaculation from the male reproductive system?
May/June 2017
What route do sperm cells follow from the male reproductive system during ejaculation?
May/June 2017
Which birth-control method offers some protection against syphilis and HIV?
May/June 2017
In which section of the human female reproductive system does a zygote begin dividing to produce a ball of cells?
May/June 2018
The diagram depicts a baby just before birth. Which labelled structures are the cervix and uterus?
May/June 2018
A person’s basal body temperature is the body temperature measured as soon as they wake in the morning. In women, a rise in blood progesterone concentration leads to a slight increase in basal body temperature. The graph shows the basal body temperature of one woman across a 28-day period. On which day did ovulation take place?
May/June 2018
The diagram depicts a male human gamete.
May/June 2018
The diagram illustrates several stages of human reproduction, beginning with ovum (egg) and ending with foetus. In which part of the body does stage 2 take place?
May/June 2019
The diagram illustrates how blood from a human fetus flows near to the mother’s blood in the placenta. Which substances are found at X in greater concentrations than at Y?
May/June 2021
The diagram illustrates the way the blood of a human fetus flows close to the mother’s blood in the placenta. Which substances are found at X in greater concentration than at Y?
May/June 2021
Which row identifies the two hormones needed for ovulation to happen?
May/June 2022
The diagram illustrates the female reproductive system. In which part does fertilisation occur?
May/June 2022
The illustration depicts a developing fetus inside the uterus. What is the name of the liquid at X?
May/June 2022
The diagram illustrates the human male reproductive system. Which structure can hold sperm?
May/June 2022
The diagram depicts a developing fetus inside the uterus. What is the liquid at X known as?
May/June 2022
The diagram illustrates the 28 days in a typical menstrual cycle. The letters placed around the outside represent different stages in the cycle. Which row correctly identifies the stages in the cycle?
May/June 2023
The diagram illustrates how the blood vessels are arranged in the wall of the uterus and the placenta of a pregnant woman. Which substance will have an increased concentration in the blood as it passes from 1 to 2?
May/June 2023
Which row shows how substances are exchanged at the placenta?
May/June 2023
What route do sperm cells follow from the male reproductive system during ejaculation?
May/June 2024
The diagram presents the female reproductive system. Which label points to the cervix?
May/June 2024
In human reproduction, which order of events is correct?
May/June 2024
The diagram illustrates the female reproductive system during pregnancy. Which labelled structure eliminates the excretory products of the fetus?
May/June 2024
In the placenta, which substance moves from the embryo’s blood into the mother’s blood down a concentration gradient?
May/June 2025
What is the principal role of the prostate gland?
May/June 2025
The graph illustrates how the levels of four hormones change during the menstrual cycle. Which line shows progesterone?
May/June 2025
Sperm cells are kept in a laboratory until they are ready for use in artificial insemination. The substances used to preserve the sperm cells have been found to harm the acrosomes. This causes fertility to decrease. Which statement explains why fertility may decrease?
May/June 2025
The hormones regulating the menstrual cycle are secreted in different amounts at different times in the cycle. In pregnancy, menstruation does not occur and no eggs are produced or released. What would be the levels of hormones FSH, LH and progesterone during pregnancy?
May/June 2025
Every human gamete contains a single sex chromosome. Which statement is the correct one?
May/June 2025
The diagram illustrates a fetus developing inside the uterus. What function does X have?
Oct/Nov 2015
Human gametes are not all the same. Which statement about male gametes is correct?
Oct/Nov 2015
Fig. 4.1 illustrates how the thickness of the uterus lining and the concentration of progesterone in the blood vary during the menstrual cycle.
Oct/Nov 2015
The diagram illustrates the human female reproductive system. At which point is a surgical method of contraception normally performed?
Oct/Nov 2016
The diagram illustrates a section of the male reproductive and urinary systems. What is X?
Oct/Nov 2016
What functions do the amniotic sac and the amniotic fluid perform?
Oct/Nov 2016
The diagram depicts a fetus inside the uterus. Which of the labelled structures are needed to nourish the fetus, and which are used to support it and protect it from mechanical shocks?
Oct/Nov 2017
The diagram illustrates how the thickness of the lining of the uterus changes over the course of one menstrual cycle. At what point would progesterone and LH levels be at their greatest?
Oct/Nov 2017
Fig. 1.1 illustrates the stages in human twin development.
Oct/Nov 2017
The graph illustrates the concentration of a hormone in the blood over one menstrual cycle. Which hormone’s concentration was measured?
Oct/Nov 2018
Describe what each of the following hormones does in the menstrual cycle: FSH progesterone
Oct/Nov 2018
The graph illustrates how hormone concentrations vary over the course of a menstrual cycle. Which curve shows progesterone?
Oct/Nov 2019
The diagram illustrates the female reproductive system. In which part does implantation take place?
Oct/Nov 2019
After sexual intercourse in humans, fertilisation can happen.
Oct/Nov 2019
The diagram represents a calendar covering 33 days in February and March. A girl with a regular menstrual cycle lasting 28 days starts menstruating on 5 February. Between which dates would the progesterone concentration in her blood increase most quickly?
Oct/Nov 2020
Explain how a surgical procedure can be used as an effective form of birth control in a man and in a woman.
Oct/Nov 2020
The graph illustrates the blood concentration of three of the four hormones FSH, LH, oestrogen and progesterone during a menstrual cycle. Which hormone is not shown?
Oct/Nov 2021
The graph illustrates the concentration in the blood of three of the four hormones FSH, LH, oestrogen and progesterone during a menstrual cycle. Which hormone is missing?
Oct/Nov 2021
The investigation looked at how likely pregnancy was after sexual intercourse on selected days within the menstrual cycle. The graph presents the findings from this investigation.
Oct/Nov 2021
Human gametes are not all the same. Which statement about male gametes is correct?
Oct/Nov 2022
The diagram represents the menstrual cycle. The numbers indicate how many days have passed since menstruation began. Which label marks the point in the cycle at which implantation is most likely to happen?
Oct/Nov 2022
Human gametes are not all identical. Which statement about male gametes is correct?
Oct/Nov 2022
In the menstrual cycle, hormone M is secreted in the body and triggers the formation of eggs. After that, hormone N is released and causes ovulation. What are the names of hormones M and N?
Oct/Nov 2022
The diagram depicts a baby just before birth. Which labelled structures are the cervix and the uterus?
Oct/Nov 2023
The diagram illustrates the female reproductive system. Which row gives the correct labels for the diagram?
Oct/Nov 2023
The diagram illustrates a fetus inside the uterus. Which structures are necessary for nourishing the fetus, and which structures are necessary for supporting it and shielding it from mechanical shocks?
Oct/Nov 2023
Through which sequence of organs must a sperm cell travel before it can fertilise an egg cell?
Oct/Nov 2024
The diagram illustrates how the thickness of the uterus lining changes over a woman’s menstrual cycle. During which time is the woman most likely to be fertile?
Oct/Nov 2024
The diagram illustrates how the thickness of the uterus lining changes over one menstrual cycle. At what point would progesterone and LH levels be at their highest?
Oct/Nov 2024
Fig. 1.1 is a front view of the female human reproductive system. The labels shown are A, B, C, D and E.
Oct/Nov 2025