Plants can be grown in large numbers by germinating seeds, or by growing bulbs or tubers. Cuttings can be taken from existing plants, and can be grafted onto the stock of another plant.
germinationThe process where seeds sprout and begin to grow. occurs when a new plant grows out from a seed. All seeds require three conditions for successful germination:
Water allows the seed to swell up and all the chemical reactions involved in the growth of the embryo to take place.
Oxygen is needed for aerobic respiration which provides the energy the embryo needs to carry out cell division and grow.
Warmth is required for the enzymes to carry out respiration and cell division.
WOW = Water Oxygen Warmth
As the new plant grows, it produces roots which take in water and minerals from the soil and produces leaves on its shoots which carry out photosynthesis to make food for the plant.