Subphylum Urochordata Protochordata
Subphylum Urochordata Protochordata
Most urochordates are sessile marine animals. The body is unsegmented and covered by a cellulose-like substance called tunicin.
Though gill slits are present, the adults lack other chordate characteristics.
The notochord occurs only in the tail of the larva.
The adult lacks it. It also lacks a tail and a nerve cord, though the larva has these features.
Ascidian are the members of ________________ phylum. | |||
| Right Option : A | |||
| View Explanation | |||
Retrogressive metamorphosis is found in _________________ | |||
| Right Option : C | |||
| View Explanation | |||
The change in the body of organism in which the adult is more primitive than the larva is called as the _________________. | |||
| Right Option : C | |||
| View Explanation | |||
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