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Reproduction and development
9 MDCAT Biology questions with answers and explanations.
Printable worksheet with answer key
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Fertilisation in humans normally takes place in the:
- 1 Uterus
- 2 Ovary
- 3 Fallopian tube
- 4 Vagina
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Correct answer: Fallopian tube
The sperm usually meets the egg in the upper part of the fallopian tube.
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Which hormone from the corpus luteum maintains the lining of the uterus?
- 1 FSH
- 2 Testosterone
- 3 Progesterone
- 4 Oxytocin
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Correct answer: Progesterone
Progesterone keeps the endometrium thick and ready for implantation.
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The surge of luteinising hormone (LH) triggers:
- 1 Menstruation
- 2 Lactation
- 3 Ovulation
- 4 Implantation
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Correct answer: Ovulation
A sharp rise in LH around the middle of the cycle makes the mature follicle release the egg.
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In males, spermatogenesis occurs in the:
- 1 Epididymis
- 2 Prostate gland
- 3 Seminiferous tubules
- 4 Vas deferens
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Correct answer: Seminiferous tubules
Sperm are made in the coiled seminiferous tubules of the testes.
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How many sperm cells are formed from one primary spermatocyte?
- 1 2
- 2 4
- 3 8
- 4 1
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Correct answer: 4
Meiosis I and II give four haploid cells, and each becomes a sperm.
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How many functional egg cells come from one primary oocyte?
- 1 4
- 2 2
- 3 3
- 4 1
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Correct answer: 1
Divisions of an oocyte are uneven. Only one large egg forms and the other cells are small polar bodies.
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Double fertilisation is a feature of:
- 1 Mosses
- 2 Gymnosperms
- 3 Ferns
- 4 Angiosperms
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Correct answer: Angiosperms
In flowering plants one sperm fertilises the egg and the other joins the central cell.
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In flowering plants, the endosperm forms when a sperm nucleus fuses with:
- 1 The antipodal cells
- 2 The synergids
- 3 Two polar nuclei
- 4 The egg cell
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Correct answer: Two polar nuclei
A sperm nucleus fuses with the two polar nuclei, giving a triploid endosperm tissue that feeds the embryo.
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Which hormone is detected by a standard pregnancy test?
- 1 hCG
- 2 Insulin
- 3 Oestrogen
- 4 Prolactin
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Correct answer: hCG
Human chorionic gonadotropin (hCG) is made by the developing placenta and appears in the urine of pregnant women.