bryozoan

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bryozoan

A bryozoan colony grows on a submerged rock in a clear tide pool.

Definition

Noun: A bryozoan is a small, aquatic invertebrate animal. They are colonial animals, meaning many individual organisms (called zooids) live connected together in a single structure. Each zooid is a tiny polyp that typically lives inside a protective case it builds. Bryozoans are filter feeders, using a crown of tentacles (called a lophophore) to capture food particles from the water. They are commonly found attached to surfaces like rocks, seaweed, or shells in marine and some freshwater environments.

Examples of Usage
  • The surface of the old shell was covered with a delicate, lace-like bryozoan.
  • Under the microscope, the structure of the bryozoan colony revealed hundreds of interconnected zooids.
  • Scientists study fossil bryozoans to understand ancient marine ecosystems.
Advanced Usage
  • As a collective noun: The term can refer to a single colony or to the entire phylum (Bryozoa) of these animals.
    • This bryozoan (colony) has been growing on this pier piling for several years.
    • The phylum Bryozoa includes thousands of species.
Variants and Related Words
  • Bryozoa (noun, plural): The scientific phylum name for all bryozoans.
  • Polyzoan (noun): An older, synonymous term for bryozoan.
  • Moss animal (noun): A common name for bryozoan, referring to their moss-like appearance when many colonies grow together.
  • Sea mat (noun): A common name for encrusting bryozoan colonies that form flat, mat-like coverings.
  • Zooid (noun): An individual animal that is part of a colonial organism like a bryozoan.
Synonyms
  • Moss animal
  • Polyzoan (less common)
  • Sea mat (for encrusting types)
Related Phrases and Terms
  • Lophophore (noun): The ring or U-shaped structure bearing ciliated tentacles that bryozoans and some related phyla use for feeding and respiration.
  • Colonial organism (noun): A life form where many genetically identical individuals (zooids) live together in a connected group, often with division of labor.
  • Filter feeder (noun): An animal that feeds by straining suspended matter and food particles from water.
bryozoan

A bryozoan colony grows on a submerged rock in a clear tide pool.

Noun
  1. sessile aquatic animal forming mossy colonies of small polyps each having a curved or circular ridge bearing tentacles; attach to stones or seaweed and reproduce by budding

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