Synonymer

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Definitioner

Substantiv

  1. Any of many marine echinoderms, of the class Echinoidea, commonly found in shallow water, having a complex chewing structure named Aristotle's lantern.

Exempel

  • Of the many species of sea urchins utilized in biological research today the most widely used in North America is probably the purple sea urchin, Strongylocentrotus purpuratus.
  • The pericentriolar radial complex characteristic of the spermatozoa of other echinoderms is lacking in the spermatozoa of all sea urchins.
  • Approximately 20% of sea urchins are direct-developers, meaning that they bypass the pluteal larval stage and develop directly into an adult sea urchin.

Böjningsformer

Pluralsea urchins

Kategorier