Dicotyledon

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Dicotyledon Meaning and Definition in Dictionary

Definitions from Wordnet 2.0


  • flowering plant with two cotyledons; the stem grows by deposit on its outside

Definitions from Wiktionary


  • flowering plant with two cotyledons; the stem grows by deposit on its outside

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Dicotyledon Meaning and Definition in Wikipedia


The dicotyledons, also known as dicots, were one of the two groups of flowering plants or angiosperms. The name refers to one of the characteristics of the group, namely that the seed has two embryonic leaves or cotyledons. There are around 200,000 species in this group. The other group of flowering plants were called monocotyledons or monocots, with one cotyledon. Historically, these two groups formed the two divisions of the flowering plants.

From the 1990s onwards, molecular phylogeny showed what botanists already suspected: dicotyledons are not a monophyletic group. They are a number of lineages, such as the magnoliids. Groups now known as basal angiosperms diverged earlier than the monocots did. The traditional dicots are a paraphyletic group. The largest clade of the dicotyledons are known as the eudicots. They are definitely monophyletic. They are distinguished from all other flowering plants by the structure of their pollen. Other dicotyledons and monocotyledons have an older type of pollen, whereas eudicots have derived pollen.



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