Dictionary > Eudicotyledon

Eudicotyledon

Definition
noun, plural: eudictoyledons
Any of the tricolpate angiosperms characterized mainly by having two cotyledons in the seed
Supplement
The angiosperms (the flowering plants) can either be a monocotyledon (or monocot) or a dicotyledon (or dicot) according to the number of cotyledons in their seeds (which in the case of dicots the cotyledons are two, hence the name). The cotyledons of the dicots may also emerge and show above the ground and function similar to leaves (i.e. capable of performing photosynthesis). Nevertheless, there are members of the dicot plants that are not considered members of eudicotyledon. For instance, the magnoliids are not members of the eudicotyledon clade. Thus, the eudicotyledons are also referred to as non-magnoliid dicots.
The eudicotyledons are regarded as the true dicotyledons to distinguish them from the other dicots. The eudicotyledons differ from the other dicots in having a tricolpate (i.e. three colpi) pollen structure. A colpus is a groove sometimes occurring on grains of pollen. Apart from this feature, the eudicotyledons share features common to other dicoteyledons, e.g. having two cotyledons in a seed, netted venation, and flower parts that are in multiples of four or five.
Word origin: eu- (true) + dicotyledon
Synonym(s):

  • eudicot
  • Eudicotidae
  • tricolpate
  • non-magnoliid dicot

See also:

  • angiosperm
  • dicot


    You will also like...

    Endemic Flora of New Zealand
    New Zealand’s Unique Flora

    If New Zealand has lots of unique animals, it's also got a whole lot of unique plants. Find out more about some of them,..

    Gene Regulation in Eukaryotes
    Gene Regulation in Eukaryotes

    Learn about the general structure of a eukaryotic gene, the transcription factors, and post-transcriptional regulation....

    An artistic depiction of a human embryo
    Growth and Development of a Human Baby

    Upon fertilization, a zygote forms and develops into an embryo. This tutorial elaborates on the growth and development f..

    The process of photosynthesis
    Photosynthesis – Photolysis and Carbon Fixation

    Photosynthesis is the process that plants undertake to create organic materials from carbon dioxide and water, with the ..

    Sugar Homeostasis
    Sugar Homeostasis

    The blood sugar level is regulated by two hormones. The mechanism behind this type of negative feedback control is descr..

    Developmental Biology
    Developmental Biology

    Developmental biology is a biological science that is primarily concerned with how a living thing grows and attains matu..