Saturday, April 9, 2011

3.4 Plant Fertilisation

Growth of the pollen tube followed by fertilization leads to seed & fruit making.

1. The pollen nucleous fertilizes the ovule, this forms the Zygote which develops into an embryo, then turns into the embryonic plant, - travels down the pollen tube.

2. Outside the ovule the seed coat forms called the Testa.

3. Cotyledons are food stores for the seedling, (it supports the plant for it's first set of leaves.)

4. Th plant put a lot of energy to thicken walls, and make fruit. (thicken walls of ovary + carpel.

5. The ovary develops into fruit & the ovule develops into seed.

1 comment:

  1. The quality of your work continutes to improve. We will work on fruit and seed structure, seed germination in the next lesson.