大象传媒

Propagating and growing plantsProduction of new plants

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.

Part of ScienceBiodiversity and interdependence

Production of new plants

Plant propagation is the production of new plants naturally or by artificial methods.

After fertilisation in flowering plants, the fertilised ovule develops into a seed. The seeds of many flowering plants have the following structure.

The component parts of a fertilised ovule as it is turning in to a seed: in this instance it is kidney shaped.  There is a seed coat around the outside, and a large food store in the middle.
Figure caption,
The component parts of a fertilised ovule as it is turning in to a seed
Part of seedFunction
EmbryoGrows and develops into a new plant by producing shoots and roots
Food store (mainly starch)Provides energy for the embryo to grow. The embryo does not carry out photosynthesis because there is no light.
Seed coatProtects the embryo and prevents it drying out
Part of seedEmbryo
FunctionGrows and develops into a new plant by producing shoots and roots
Part of seedFood store (mainly starch)
FunctionProvides energy for the embryo to grow. The embryo does not carry out photosynthesis because there is no light.
Part of seedSeed coat
FunctionProtects the embryo and prevents it drying out