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.
Retrogressive metamorphosis is found in _________________ | |||
| Right Option : C | |||
| View Explanation | |||
In ___________________ subphylum the notochord occurs only in the tail of the larva. | |||
| Right Option : B | |||
| View Explanation | |||
Nerve cord is restricted to tail region only in ______________ | |||
| Right Option : B | |||
| View Explanation | |||
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