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Sexual reproduction in flowering plants sheet
5-mark answer frame

Draw a labelled diagram of a flower showing its reproductive parts. Describe pollination and fertilisation, and say what the ovule and the ovary become.

How to lay out the answer. Follow the frame, then write it in your own words.

  1. 1 · Open in one line. The flower is the reproductive organ of a flowering plant.
  2. 2 · Name the parts. The stamen (anther and filament) is male; the pistil (stigma, style and ovary with ovules) is female; sepals protect and petals attract.
  3. 3 · Pollination. Pollen moves from the anther to the stigma: self-pollination within one flower, or cross-pollination to another plant by wind, water or insects.
  4. 4 · Fertilisation. A pollen tube grows down the style; the pollen nucleus fuses with the egg nucleus in the ovule.
  5. 5 · After fertilisation.
    • Ovule → seed.
    • Ovary → fruit.
    • Seeds are dispersed and germinate into new plants.
  6. 6 · Draw the flower. [Diagram: sepal, petal, stamen (anther, filament), pistil (stigma, style, ovary, ovules), pollen tube]
  7. 7 · Link to daily life. Bees in a mustard field carry pollen from flower to flower.
  8. 8 · Close in one line. So pollination and fertilisation turn a flower into seeds for the next generation.

Scoring tip: Group your labels: anther and filament under stamen; stigma, style and ovary under pistil.