Definition

1. Noun:
   • A taxonomic class of small, free-swimming tunicates: "Class Larvacea" refers to a group of marine animals that are small, pelagic (free-swimming), and retain a larval-like body form throughout their life. They are also known as appendicularians. They are sometimes classified as an order within the subphylum Tunicata.

Usage Examples

• Noun:
  • The class Larvacea is characterized by its neotenic species, which resemble the larval stage of other tunicates.
  • Biologists study the delicate gelatinous houses built by organisms in the class Larvacea.

Advanced Usage

• "Larvacean" (adj/n): Pertaining to or a member of the class Larvacea.
  • The larvacean fauna in this region is particularly diverse.
• In taxonomic hierarchy: Used to specify a precise biological classification.
  • The phylum Chordata includes the subphylum Tunicata, which contains the class Larvacea.

Variants and Related Words

• Larvacean (n): An individual organism belonging to the class Larvacea.
• Appendicularia (n): A synonym often used for the class or an individual within it. The order is sometimes called Appendicularia.
• Tunicate (n): The broader subphylum (Tunicata) to which the class Larvacea belongs.

Synonyms

• Appendicularians: A common name for members of this class.
• Pelagic tunicates: A descriptive term highlighting their free-swimming, open-ocean habitat.

Related Phrases / Terms

• "Larvacean house": Refers to the complex, disposable mucous structure secreted for filter feeding.
  • The larvacean house filters phytoplankton from the water.
• "Oikopleurid": Refers to a common family (Oikopleuridae) within the class Larvacea.
  • Oikopleurids are among the most abundant larvaceans.

Noun

1. small free-swimming tunicates; sometimes classified as an order