polyplacophore

Thân thiện

A marine biologist carefully examines a polyplacophore on a rocky tidepool.

Definition

Noun: 1. A type of marine mollusk: A primitive, elongated, bilaterally symmetrical marine mollusk characterized by having a mantle covered with eight overlapping calcareous plates or shell valves. This animal is commonly known as a chiton.

Usage Examples

• Noun:
  • The polyplacophore clung tightly to the rocky surface in the tidal zone.
  • Underneath its eight protective plates, the polyplacophore has a broad, muscular foot for locomotion.
  • Scientists study the polyplacophore to understand the evolution of mollusks.

Advanced Usage

• As a subject in biological taxonomy: The term is used in scientific and zoological contexts to refer specifically to members of the class Polyplacophora.
  • The fossil record suggests that the polyplacophore body plan has existed for hundreds of millions of years.

Variants and Related Words

• Chiton (n): The common name for a polyplacophore.
  • We found several chitons during the low-tide exploration.
• Polyplacophora (n, plural): The scientific class name encompassing all chitons.
  • The class Polyplacophora is entirely marine.

Synonyms

• Chiton: The most direct and common synonym.
• Sea cradle: A less common, descriptive name.

Related Terms (Scientific Context)

• Mollusk (n): The larger phylum (Mollusca) to which polyplacophores belong.
• Radula (n): The rasping, tongue-like feeding organ possessed by polyplacophores and other mollusks.
• Mantle (n): The dorsal body wall which in polyplacophores secretes the eight shell plates.

Học thuật

Noun

1. primitive elongated bilaterally symmetrical marine mollusk having a mantle covered with eight calcareous plates

Từ đồng nghĩa

• chiton
• coat-of-mail shell
• sea cradle