Explain the characters of urochordata with examples

1.	Explain the characters of urochordata with examples
Answer» Larval characters of Urochordates: 1. Elongated larva of Urochordata is known as ascidian tadpole larva. Adult emerges from the larva by the process of meta\xadmorphosis.2. Notochord restricted at the caudal end, hence name Urochordata.3. Dorsal hollow nerve chord spreads end to end.4. Pharyngeal gill slits are present.5. Highly active post **** tail is prominent.Adult characters of Urochordata: 1. The body of the adult is covered by a tunic (hence named Tunicata). The tunic is composed of a protein tunicin and a polysaccharide similar to plant cellulose. 2. Adults are sessile and attached to the substratum of the sea.3. Incurrent branchial siphon, and ex-current atrial siphon, form entrance and exit portals for the water that circulates through the body.4. Branchial siphon opens into a branchial basket, i.e. pharynx.5. Tiny finger-like sensory tentacles encircle the incurrent siphon to examine the incoming water and prevent large parti\xadcles from entering.6. These are hermaphrodite animals; repro\xadduce both sexually and asexually.

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