Practise 43 real questions on Reproduction from 2021 to 2026. See the answer and explanation as soon as you answer.
Reproduction is one of the 13 main topics in our O Level Biology (Cambridge (CAIE) 5090) question bank, and about 7% of its real questions come from it. Tayyari Karo has 43 real questions on this topic from 2021 to 2026, from Paper 1, Paper 2, Paper 3; 35 are multiple choice and marked instantly, and the rest are structured questions with a model answer. By difficulty: 33 medium, 9 easy, 1 hard.
Work through the questions below, then open the explanation for each one. Redo the ones you missed a few days later.
These are real past-paper questions. Think of your answer first, then open the explanation.
An amoeba is an organism belonging to the kingdom Protoctist. Amoebas reproduce asexually and divide approximately every two days. Starting at day 0 with a single amoeba, how many amoebas will there be at the end of day 14, assuming none have died?
Answer: C. 128
14 days is 7 divisions, so 2^7 = 128.
What is the main function of the prostate gland?
Answer: C. producing a liquid in which the sperm can swim
The prostate gland adds fluid to sperm to form semen.
Features of four flowers A–D are recorded (smooth pollen, sticky pollen, anthers inside petals, stigma outside petals, small petals, large petals).
Which flower is most likely wind-pollinated?
Answer: B. flower B
Wind-pollinated flowers have smooth/light pollen, exposed anthers, a feathery (outside) stigma and small petals.
What is the sequence of organs a sperm cell passes through to fertilise an egg?
Answer: A. sperm duct -> urethra -> vagina -> cervix -> uterus -> oviduct
A large number of carrot plants can be produced from small pieces of carrot root. Which row is correct for this method? (asexual reproduction / genetically identical offspring / cell division by mitosis / cell division by meiosis)
Answer: C. yes / yes / yes / no
Which row shows the two hormones that are necessary for ovulation to occur? FSH / LH / oestrogen / progesterone
Answer: D. yes / yes / no / no
(a) Compare the functions of a sperm cell and a pollen grain and describe how the structure of each is related to its function. [6] (b) Suggest reasons why sexual reproduction may be better for the survival of a species than asexual reproduction. [4]
(a) Sperm cell: carries male genetic material to fertilise the egg; has a tail (flagellum) for swimming, many mitochondria for energy, acrosome with enzymes to penetrate the egg, small. Pollen grain: carries male gametes to the ovule in flowering plants; has a tough wall to protect during transport by wind/insects, a tube grows to deliver male nuclei to the ovule; produces two male nuclei. Both deliver male genetic material for fertilisation. (b) Sexual reproduction mixes genetic material from two parents; produces variation in offspring; variation helps a species survive changes in environment/disease; asexual offspring are genetically identical and vulnerable to the same conditions.
Best-effort; mark scheme not parsed.
| Session | Paper 1 | Paper 2 | Paper 3 |
|---|---|---|---|
| May/June 2026 | 2 | 1 | – |
| May/June 2025 | 3 | 1 | – |
| Oct/Nov 2025 | 1 | 1 | – |
| May/June 2024 | 5 | – | 1 |
| Oct/Nov 2024 | 3 | 1 | – |
| May/June 2023 | 5 | – | – |
| Oct/Nov 2023 | 3 | 1 | – |
| May/June 2022 | 4 | 1 | – |
| Oct/Nov 2022 | 4 | – | – |
| May/June 2021 | 2 | – | – |
| Oct/Nov 2021 | 3 | 1 | – |
43 real O Level Biology (5090) questions on Reproduction from 2021 to 2026, from Paper 1, Paper 2, Paper 3. Each one shows the year, session and paper it came from.
Yes. Every question shows the correct answer and a short explanation the moment you answer.
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