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 ?
The internal anatomies of a monocot (has one cotyledon and parallel leaf venation) and dicot stem (has two cotyledons and reticulate leaf venation) are shown in Figure 6-16.
Short grasses and many dicots were replaced with tall tussock grasses, and there were subsequent changes in ants and lizards dependent on these plant forms.
Codon usage bias has also been investigated in higher plants, and monocots have been found to retain more GC content as compared to dicots. Thus it explains variable mutational conditions and different genomic level organization (Kawabe and Miyashita, 2003).
The coding sequences of the chimeric gene constructs that were codon optimized for either a dicot (tobacco) or a monocot (creeping bentgrass) were placed between the heterologous M24 promoter of the Mirabilis mosaic virus [2, 21, 23, 24] and the terminator sequence from the rbcSE9 gene (Figure 1).
Most dicots are unable to accumulate high levels of Si in their shoots, although some, such as cucumber can accumulate moderate levels in leaves.
* Vascular cambium is found in the stems and roots of dicot plants and is a type of meristem that provides for increase in stem diameter.
* Describe the difference between a dicot root and monocot root
600 Field violet/European Viola arvensis 400 field pansy or "wild pansy" Groundsel Senecio vulgaris 100 Lambsquarters Chenopodium album 1600+ Prostrate knotweed Polygonum aviculare 400 Shepherd's purse Capsella bursapastoris 50 TABLE 10-3 Common Annual and Perennial Weeds WEED SPECIES TYPE Annuals Barnyardgrass Echinochloa crus-galli Monocot Cheeseweed mallow * Malva parviflora Dicot Crabgrass Digitaria spp.
Dicot, dicotyledon A type of plant that has two cotyledons present when the seedling emerges from the soil.
diversifolia when compared with other dicot plants is probably one of the reasons for its strong dominance when competing with other weeds when water is not limiting especially in poor soils.
Although there is no consensus concerning the precise phylogenetic position of the monocots within the angiosperms (Angiosperm Phylogeny Group (APG), 2003), most studies suggest that the monocots are diverged from a common ancestor with a basal dicotyledon (dicot) group.
The plants follow, grouped into pteridophytes (ferns and fern allies), gymnosperms (conifers and cycads), dicotyledons (dicot flowering plants), and monocotyledons (monocot flowering plants).