Cotyledon

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Cotyledons are the initial leaves that emerge from a seed upon germination. Flowering plants (division magnoliophyta) are classified into two taxonomic classes depending on whether they have one or two of these cotyledons.

Class Magnoliopsida (Dicots)
Class Liliopsida (Monocots)

Monocot seed: a - Seedcoat, b - Endosperm, c - Cotyledon, d - Embryo

Dicot seed: a - seedcoat, b - endosperm, c - cotyledons, d - embryo

Dicot seedling

See Also

Plants

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