class Monocotyledonae

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Definition

Noun: - A major class of flowering plants (angiosperms) characterized by seeds that contain a single embryonic leaf (cotyledon). Plants in this class typically have leaves with parallel veins and flower parts in multiples of three. This class includes economically and ecologically important families such as grasses, lilies, palms, and orchids.

Usage
  • The term is used in formal botanical and biological contexts to classify and discuss a major group of plants.
  • It is often used interchangeably with the names Liliopsida or Monocotyledones in taxonomic classification.
Examples
  • In scientific description: "The class Monocotyledonae is one of the two great groups of angiosperms, the other being the class Dicotyledonae."
  • In a botanical text: "Plants belonging to class Monocotyledonae, such as wheat and corn, are vital to global agriculture."
  • In a comparison: "Unlike dicots, members of class Monocotyledonae typically have fibrous root systems."
Advanced Usage
  • Taxonomic Context: In modern phylogenetic systems, the traditional class Monocotyledonae is often referred to as the "monocots" and is classified as a clade (a group of organisms with a common ancestor) rather than a formal class. It is a key group in understanding plant evolution.
  • Structural Botany: The defining features of class Monocotyledonae—a single cotyledon, parallel leaf venation, and scattered vascular bundles in the stem—are fundamental concepts in plant anatomy.
Variants and Related Words
  • Monocotyledons (n.): The common, plural name for plants belonging to this class. (e.g., "Palms and orchids are monocotyledons.")
  • Monocot (n., informal): A widely used abbreviated form. (e.g., "The lily is a typical monocot.")
  • Liliopsida (n.): A synonymous botanical name for the same taxonomic rank.
  • Dicotyledonae (n.): The contrasting class of flowering plants with two cotyledons.
Synonyms
  • Monocotyledons
  • Liliopsida
  • Monocots (common name)
Related Phrases / Terms
  • Parallel venation: A key leaf characteristic of the class Monocotyledonae.
  • Fibrous root system: A common root structure in this class, as opposed to a taproot system.
  • Flower parts in threes: A typical floral pattern for monocots.
Noun
  1. comprising seed plants that produce an embryo with a single cotyledon and parallel-veined leaves: includes grasses and lilies and palms and orchids; divided into four subclasses or superorders: Alismatidae; Arecidae; Commelinidae; and Liliidae

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