~Examples of Urochordates~
↪️ Aseidian :
• Urochordates also ealled as sea kquirt Cenerally they are f in cold temperate region They are seen in shallwwater They are solitary, marine animals attached to the substratum.
• Urochordates body shape is short and eylindrieal. Their basal part remains attached The is to stones.
 |
| Urochordates |
• Urochordates test translucent, folded and brown in colour. Their anterior part have branchial siphon.
• A Urochordates siphon on lateral side have mouth and anus respectively. About 50 100 tentacles are found surrounding to mouth.
• They are hermophordite, egg laying animals showing retrogressive metamorphosis.
• Doliolum
living in tropie They are called as chain tunicate. They are and subtropical region of sea. They are free living animals attach to substratum.
The length of animals is 1 to 1.5 They show polymorphism
~ Gonozooid stage (Solitary st and~
• Özooid (Free living stage). In adult ozooid or stage, their body shape is large barrel shaped and transpar They have mouth, branchial aperture and atrial aperture whi are arranged on opposite side.
• The body is covered by a te which have 8 complete muscle bands. Gonozo stage is solitary and sexual stage. In them, testis and ovar are found. The animal propels through water drives out by je propulsion. free-livia
~ Oikopleura ~
• Urochordates is found in open sea. It is microscopic in size.
• Animal is surrounded by Test. It looks like larval or Ascidian tadpore Its body is narrow and expands from mouth to tail region Animal has notochord, nerve cord, tail fin and 7 to muscle cells.
• It has pharyngeal gill slits through which filter
 |
| Urochordates |
• ftakes places. It is hermaphrodite animal Le both types of genital organs (e.g. testis and ovary) are found.
• Urochordates shows neoteny. It does not show metamorphosis and adult stage during its life history
• Urochordates example.aseidiam.dollolum.oikopleura.
• Urochordates example.aseidiam.dollolum.oikopleura. example.aseidiam.dollolum.oikopleura.
•Urochordates example.aseidiam.dollolum.oikopleura.
• Urochordates example.aseidiam.dollolum.oikopleura.
•Urochordates example.aseidiam.dollolum.oikopleura.
•Urochordates example.aseidiam.dollolum.oikopleura.