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5 Cards in this Set
- Front
- Back
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Fertilisation: Define |
The fusion of gametes |
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Fertilisation: explain 1-2 |
1)Pollen grain lands on the stigma. 2) pollen tube grows out of the pollen grain down through the style to the ovary and into the ovule. |
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Fertilisation: explain 3-4 |
3) a nucleus from the male gamete moved down the tube to join a female gamete in the ovule. The nuclei fuse together to make a zygote. Which divide by mitosis to form an embryo 4) each fertilised female gamete becomes a seed |
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Germination: Define |
When seeds start to grow |
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Germination- explain |
1) water- activates enzymes to breakdown food reserves in the seed 2)oxygen- for respiration, provides energy for growth 3) a suitable temperature-for enzymes in the seed to work |
