Through micropyle, the seed absorbs water, which swells it, causing the seed coat to burst. This helps the root to emerge out of seed. Water absorbed by the germinating seed help to activate the enzymes to digest the food of seed, which is made available to the growing embryo. It also helps to elongate hypocotyl and epicotyl, to grow it.
Air is necessary for seed germination because oxidative metabolism usually takes over soon after a plant embryo starts to grow; most seeds require oxygen for germination. So, air is very important for germination as it contains about 21 percent of oxygen, which is used during respiration.
As far as temperature is concerned, germination of seeds occurs over a wide temperature range between 5 to 30 °C. Suitable temperature is necessary for the enzymes to function properly. During early germination of seeds, the vital metabolization of food reserves stored in the embryo cotyledons or the endosperm is mediated by hormones, which in some cases are gibberellin.
4. A Viable seed
Water is necessary for germination because it helps the seed grow
Air, moisture, suitable temperature and viability of a seed
I think that this will be useful to me since I found not so long ago an article on how to grow, but it didn’t work out very well for me, since the lamps were not of this kind of light and turned out to be small. But then I found autoflowering seeds I think this time it will definitely work out. And I can relax at the console with a friend. Maybe I'll even dare to make cookies with the same weed.