The plant classification The classification of vegetables is based on criteria of reproduction mainly.
| Have they leaves? | flowers? | Genera
| neither root, or stem, or leaves (Thalle) no leaf, not need of light
| no flower, no fruit spores
| Mushrooms, having been classified for a long time among vegetables, of which they share only few of distinctives (in this case immobility), they belong to the reign of Fungi or else funguses today.
Lichens The lichen is born in a narrow relation called symbiosis, between a mushroom or mycobiont and a seaweed or a phycobionte.
| no leaf, but need of light
| no flower, no fruit | Seaweeds (125.000 species) | plants with leaves role of light : chlorophyll-leaf
| | | no flower, no fruit |
Foams (9500 species)
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| Ferns (11000 species) |
- 1. Gymnospermes
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seeds in an opened fruit
| Conifers (550 species)
|
- 2. Angiosperms
- 2.1.monocotyledons
- 2.2 dicotyledons
| seeds in a closed fruit |
ex : palms, banana tree
ex : cherry tree, linden
|
- Monocotyledonous
- seeds have a sprout in the single cotyledon,
- leaves have parallel ribs!,
- the elements which compose the flower (petals, sepals, stamens) are by 3 or multiple of 3 (axial symmetry by 3 ),
- the stem keeps the same diameter all life.
- Dicotyledon
- the seed contains a sprout in two cotyledons,
- leaves are horizontal (in general), in the ramified veins and in both different faces,
- the elements which compose the flower (petals, sepals, stamens) are in general by 4 or 5 or their multiple.
- the stem grows in thickness as it matures.
Copyright © 2006 PYL
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