MrBadmusAI

Year 8 · Spring First Half

Biology

4 lessons from 1 unit.

Unit B5 · lessons 4 to 7 of 8

Reproduction

Every living thing you have ever seen came from another living thing. This unit is about how — in humans, and in the flowering plants that solved the same problem without being able to move.

  1. 04Gestation, the placenta and birthProcessFor nine months one organism lives inside another and takes everything it needs from it — without their blood ever meeting.Open this lesson
  2. 05Lifestyle and the developing foetusSystemThe placenta is an exchange surface, not a filter. What crosses it is decided by the molecule — not by whether the foetus would be better off without it.Open this lesson
  3. 06Flowers and pollinationSystemA flower is not a decoration. It is a reproductive organ with a delivery problem: the gametes are in two places and the plant cannot move.Open this lesson
  4. 07Fertilisation, seeds and fruitProcessPollen has landed. The two gametes are still several centimetres apart, and neither of them can move.Open this lesson

Back to all three sciences this half term The whole KS3 Biology course