| Longitudinal section of the apical meristem with young leaflets in Elodea |
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Legend:
1 apical meristem
3 young leaflets
4 axillary buds
5 air cavities
2 primordium (onset) of leaf
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English name: Pondweed
Scientific name: Elodea sp.
Familia: Hydrocharitaceae
Classis: Monocotyledonas
Phylum: Angiospermae
Regnum: Plantae
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| The apical meristem of pondweed is elongated. Numerous young leaves are formed along the flanks of the tip of a branch. The mature leaves are only two cells thick. Side buds can be discerned between the leaves. The stem contains numerous air cavities that help the plant to float. |