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Plant Reproduction: Pollination and germination

TASK: Copy and label this diagram in your books. Plant Reproduction: Pollination and germination. LO: to explain pollination and reproduction - To make model pollen. Flowering open video. Structure and function of the flower. stigma. anther. style. carpel. stamen. filament. ovary.

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Plant Reproduction: Pollination and germination

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  1. TASK: Copy and label this diagram in your books Plant Reproduction: Pollination and germination LO: to explain pollination and reproduction - To make model pollen Flowering open video

  2. Structure and function of the flower stigma anther style carpel stamen filament ovary ovule petal sepal receptacle peduncle Flower Structure Pollination Fertilisation Seed Dispersal Germination Test

  3. Pollination is the transfer of pollen from the anther to the stigma • This is an example of cross-pollination as the pollen travels from one flower to a different flower. This is desirable in plants as it promotes variation. Flower StructurePollination Fertilisation Seed Dispersal Germination Test

  4. Discuss with your partner, what must a flower have to a transfer pollen by wind.

  5. Discuss with your partner, what must a flower have to attract insects/birds for pollination Bees pollinating

  6. Once pollination occurs a tube grows from the pollen grain down through the style to the ovule stigma style carpel ovary ovule Note: Petals not shown in order to simplify diagram Flower StructurePollination Fruit Development Seed Dispersal Germination Test

  7. Fertilisation occurs when the male gamete fuses with the ovule (the female gamete) Flower StructurePollination Fruit Development Seed Dispersal Germination Test

  8. TASK: • Design whether your male plant gamete ( sex cell) will be insect or wind polinated. • Then make a “sticky” pollen grain or light wind pollinated sex cell

  9. Each pupil Makes plasticine pollen (can discuss dispersal as they make spiky, smooth etc pollen grains), then make stigma out of plasticine. Show first, then do as a class....Here comes the pollen.... (swoop pollen towards stigma)Pollen 'sticks' onto stigmaMuch hilarity as kids try to make their pollen bury itself in the stigma (making a pollen tubeBig bang as pollen in pollen tube reaches eggKids curl up as embryo plant in seedAnd leap out of their seats (noisily) in the manner of music and movement ..and becomes a new PLANT!!

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