What are the three conditions necessary for the germination of seeds?

For the germination of the seeds the three necessary conditions are:

1. Water — All living things required water to carry out their life processes. Most chemical reactions occur in water. So seeds also need water during germination.
2. Oxygen — Seed also needs air for the germination of seed. The oxygen present in the air is used to oxidize the stored food and thus release energy. The energy is required for the growth of the embryo.
3. A Suitable Temperature — It is necessary for all chemical activities assisted by enzymes. Enzymes are inactive at low temperatures and get destroyed at higher temperatures. They act best between 35° and 40°C.