Year 10, Pathway C 2012 New Generations.

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Presentation transcript:

Year 10, Pathway C 2012 New Generations

Fertilisation Fertilisation is when the sperm and egg gametes fuse to make a zygote (new offspring). Needs to be moist for sperm and egg to survive. External fertilisation for animals occurs in the water.

Pollination Pollination is the transfer (movement) of pollen from one flower to another to aid in the reproduction of plants

Pollination Pollination is the transfer (movement) of pollen from one flower to another to aid in the reproduction of flowering plants. Pollination is not the same as “plant fertilisation”! Pollination is used to stop plant gametes drying out.

Flower bits Petals – look pretty to attract insects MALE BITS Anther – produces pollen Pollen – contains sperm Filament – holds up anthers FEMALE BITS Stigma – sticky so pollen get stuck to it. Style – allows pollen to travel down to ovary Ovary – holds ovule (egg) which will turn into a seed when fertilised by sperm