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Our Home: Earth, a Unique Life Sustaining Planet

From flower to seed

A mango tree is full of flowers. Later, mangoes grow. Each one has a seed inside. How does a flower make a seed?

Pollen is the fine dust in a flower. It holds the male gametes. An ovule is a tiny part inside the flower. Each ovule holds a female gamete.

A flower holds pollen and ovules.
Step 1 of 4
  1. A flower holds pollen and ovules.
  2. Wind or an insect carries pollen to a flower.
  3. A male gamete joins a female gamete in an ovule.
  4. The ovule becomes a seed.

The rule

Pollination moves pollen to a flower. Fertilisation is when a male gamete and a female gamete join. The ovule then becomes a seed.

Wind, insects or animals carry pollen. This is pollination. When the gametes join, that is fertilisation.

Two steps, not one
StepWhat happensWhere
PollinationPollen moves to a flowerCarried by wind, insects or animals
FertilisationA male and a female gamete joinInside the ovule

Watch out!

Pollination is not fertilisation. Pollination moves pollen. Fertilisation is when gametes join.

Sort each event. Is it pollination or fertilisation?

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This track

  1. 0 Start here
  2. 1 A place in the middle
  3. 2 The blanket of air
  4. 3 Water everywhere
  5. 4 The thin layer on top
  6. 5 The neighbours
  7. 6 Several at once, not one
  8. 7 Checkpoint
  9. 8 Looking after Earth
  10. 9 One parent or two
  11. 10 From flower to seed
  12. 11 The big picture
  13. 12 Track quiz

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