About The Word Tunicata
Learn about the word Tunicata to help solve your crossword puzzle. Discover Tunicata definitions and meaning, origins, synonyms, related terms and more at the free Crossword Dictionary.
Tunicata
| Tunicata Definition And Meaning |
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What's The Definition Of Tunicata?
[n] tunicates
Synonyms | Synonyms for Tunicata: subphylum Tunicata | subphylum Urochorda | subphylum Urochordata | Urochorda | Urochordata Related Terms | Find terms related to Tunicata: See Also | Ascidiaceae | Chordata | class Ascidiaceae | class Larvacea | class Thaliacea | Larvacea | phylum | phylum Chordata | Thaliacea | tunicate | urochord | urochordate Tunicata In Webster's Dictionary \Tu`ni*ca"ta\, n. pl. [NL. See {Tunicate}.] (Zo["o]l.)
A grand division of the animal kingdom, intermediate, in some
respects, between the invertebrates and vertebrates, and by
some writers united with the latter. They were formerly
classed with acephalous mollusks. The body is usually covered
with a firm external tunic, consisting in part of cellulose,
and having two openings, one for the entrance and one for the
exit of water. The pharynx is usually dilated in the form of
a sac, pierced by several series of ciliated slits, and
serves as a gill.
Note: Most of the species when mature are firmly attached to
foreign substances, but have free-swimming larv[ae]
which are furnished with an elongated tail and somewhat
resemble a tadpole. In this state the larva has a
urochord and certain other structures resembling some
embryonic vertebrates. See {Ascidian}, {Doliolum},
{Salpa}, {Urochord}, and Illust. of {Social ascidian},
under {Social}.
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