Pollen tube grows down Style to ovary 3. Sperm cells move down pollen tube to ovary B. Fertilization - Double Fertilization 1. Known recognition mechanisms occur at the level of pollen-stigma interaction. Recognition of same identitiy activates processes which block fertilization. A. Germination 1.
Embryo absorbs water, swells, bursts open seed coat.
Dormancy a. Seed may require drying out. Seed coat must be disrupted - could require gut passage.