3.4 Plant Fertilisation

pollen grains on stigma
- germinate
- tubes begin to grow down stigma
- pollen tube grows into the ovule
- nucleus travels down pollen tube -> to ovule

(http://www.landlearn.net.au/newsletter/2008term2/images/Seed-rotated.jpg)

1. Pollen nucleus + ovule --> zygote grows into embryonic plant (Fertilisation)
2. Outside ovule - seed coat forms (testa)
3. Cotyledons - food stores for the seedling (develops in the zygote) - supports plant until it develops its first set of leaves
4. Thickening of the walls of the ovary/carpel - puts energy into the walls like sugar, protein - forms fruit of the plant