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Many monocots are herbaceous and do not have the ability to increase the width of a stem (secondary growth) via the same kind of vascular cambium found in non-monocot woody plants. [35] However, some monocots do have secondary growth; because this does not arise from a single vascular cambium producing xylem inwards and phloem outwards, it is ...
The alismatid monocots are a group of 15 interrelated families of flowering plants, named for their largest order, Alismatales. [a] Like other monocots, they usually have a single embryonic leaf in their seeds, scattered vascular systems, leaves with parallel veins, flowers with parts in threes or multiples of three, and roots that can develop in more than one place along the stems. [6]
The evolution of having one or two cotyledons may have arisen 200-150 Mya when monocots and dicots are thought to have diverged. [3] [4] Furthermore, the cotyledons in dicot seeds contain the endosperm which acts as the seed’s food storage, while in monocot the endosperm is separated from the cotyledon. [1]
The seeds characteristically have the external epidermis either obliterated (in most species bearing fleshy fruit), or if present, have a layer of black carbonaceous phytomelanin in species with dry fruits (nuts). The inner part of the seed coat is generally collapsed, in contrast to Liliales whose seeds have a well developed outer epidermis ...
The commelinids are a group of 29 interrelated families of flowering plants, named for one of the four included orders, Commelinales. [a] This subgroup of the monocots accounts for most of the global agricultural output; the grass family alone contains the major cereal grains (including rice, wheat, and maize or corn), along with forage grasses, sugar cane, and bamboo.
[a] They generally have tepals (indistinguishable petals and sepals) similar to those on the true lilies . [ 5 ] [ 6 ] [ 7 ] Like other monocots [ b ] they usually have a single embryonic leaf ( cotyledon ) in their seeds, scattered vascular systems, leaves with parallel veins , flower parts in multiples of three, and roots that can develop in ...
Monocot seedlings typically have one cotyledon (seed-leaf), in contrast to the two cotyledons typical of dicots. Monocots have been recognized at various taxonomic ranks, and under various names (see below). The APG II system recognises a clade called "monocots" but does not assign it to a
This category should contain only articles about the families of monocots, when the articles are at the scientific name, or redirects from the scientific name in the case of monotypic taxa or articles at the English name.