Sunday, April 17, 2011
3.4 Plant Ferterlisation
+ Pollen grain on the Stigma begins to germinate, a tube begins to grow joining the grain and the ovule, the nucleus travels down this tube.
+ Pollen nucleus fertilises ovule -> Zygote/ embryotic plant
+ The outside of the ovule forms Seed coat : Testa
+ Also, inside the Ovule there are food stores inside seed called : Cotyledons
+ There is also thickening of walls of Ovary, includes sugars, proteing. forms fruit by wall of ovary/carpel.
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there will be a chance to collect images on fruit and seeds next week
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