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BIOLOGY, M5 2020 HSC 3 MC

The following four events occur during reproduction in a placental mammal.

  1. Fertilisation
  2. Implantation
  3. Ovulation
  4. Placental formation

In which order do these events occur?

  1. 2, 1, 3, 4
  2. 2, 4, 1, 3
  3. 3, 1, 2, 4
  4. 3, 2, 4, 1
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`C`

Show Worked Solution
  • Ovulation (the production of the female gamete) must occur first, followed by fertilisation of the gamete.
  • Once it is fertilised, it implants itself in the uterine wall, followed by the formation of the placenta.

`=>C`

BIOLOGY, M5 2020 HSC 2 MC

Sexual reproduction in plants involves

  1. pollination caused by dispersal of seeds.
  2. cloning as it creates copies of the parent plant.
  3. mitosis leading to the formation of pollen grains.
  4. fertilisation as a result of fusion of male and female gametes.
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`D`

Show Worked Solution
  • The key process in sexual reproduction is the fusion of male and female gametes.

`=>D`