dicotyledon

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di·cot·yl·ed·on

(dī-kot'il-ē'don),
Plant (shrub, herb, or tree) with seeds that consist of two cotyledons, that is, the primary or rudimentary leaf of the embryo of seed plants.
Dicotyledonclick for a larger image
Fig. 131 Dicotyledon . The differences between dicotyledons and monocotyledons.

dicotyledon

any flowering plant of the subclass Dicotyledonae, class Angiospermae. Other ANGIOSPERMS belong to the subclass Monocotyledonae (see MONOCOTYLEDON). See figs. 131 and 171 .
References in periodicals archive ?
We also describe how this new model of seed imbibition and germination in dicotyledonous plants will be used in future germination studies at the molecular level.
The most common and widespread dicotyledonous species are Nuphar advena (Aiton) Aiton f.
taeda query cDNA sequences, there were matches to 34 species, of which 22 were dicotyledonous angiosperms.
That was reported for other dicotyledonous plant [6,13,10].
Stimulation of hook opening of dicotyledonous seedlings by red light and low fluence blue light is far-red reversible and exhibits reciprocity, as is characteristic of many low fluence-dependent phytochrome-mediated responses.
Among these compounds, glucosinolates, commonly referred to as goitrogens, are a uniform class of naturally occurring compounds found exclusively in the plant kingdom and only in a limited number of dicotyledonous families [1, 2].
The physical properties of bamboo are quite different than wood from gymnosperms or dicotyledonous angiosperms (Grosser and Liese 1972, Kumar and Dobriyal 1992).
Macerations of dicotyledonous woods and even of xylem of monocotyledonous roots and stems (Carlquist and Schneider, 1998b; Schneider and Carlquist, 1998b) tend to leave pit membranes in lateral walls of vessel elements intact.
Dicotyledonous root systems have a tap root with successive orders of branch roots, and roots extending from the hypocotyl with their own branch roots.
Percent basal cover by bare ground, grasses, and forbs (herbaceous dicotyledonous plants) was estimated in each .
It should be noted, however, that isolated leaves attributed to Itea are probably the most ambiguous form of evidence for the presence of Itea in the fossil record, since 1) many dicotyledonous plants bear simple, unlobed, pinnately-veined leaves, and 2) thus far, no single leaf character or suite of leaf characters have been suggested or discovered that are absolutely distinctive to the genus Itea when considered in the absence of floral, fruit, or pollen characters.
Altinopolis--The weed community was composed predominantly of 17 species, of which dicotyledonous species comprised 77% of the total area.