order Actiniaria
Definition
Noun: A taxonomic order of marine animals, commonly known as sea anemones. These are solitary, predatory polyps characterized by a cylindrical body, a mouth surrounded by tentacles armed with stinging cells (cnidocytes), and the absence of a medusa stage in their life cycle. They are part of the class Anthozoa.
Usage
The term "order Actiniaria" is used in formal biological and zoological contexts to classify and discuss these specific marine invertebrates. * The order Actiniaria includes over 1,000 known species. * Researchers are studying the symbiotic relationships within the order Actiniaria.
Advanced Usage
- In taxonomic hierarchy, Actiniaria is an order under the class Anthozoa, phylum Cnidaria.
- The name is often used in contrast to other anthozoan orders, such as Scleractinia (stony corals).
Variants and Related Words
- Actiniarian (noun/adjective): A member of the order Actiniaria; pertaining to the order Actiniaria.
- The actiniarian's tentacles are used for capturing prey.
- Sea anemone (noun): The common name for members of this order.
- Anthozoa (noun): The class to which this order belongs.
Synonyms
- Sea anemones (common name)
- Actinians (technical synonym)
Related Phrases
- Member of the order Actiniaria: A formal way to specify an organism's classification.
- This specimen is a member of the order Actiniaria.
Noun
-
sea anemones
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