Question

Herdmania belongs to which subphylum?
A. Cephalochordata
B. Hemichordata
C. Urochordata
D. Protochordata.

Answer 1

Hint:Herdmania is a genus of ascidian tunicates in the family Pyuridae. The genus Herdmania contains Monniot and Herdmania armata Monniot.

Complete answer:
To answer this question, first, we need to know about herdmania. Herdmania is a sedentary filter feeding tunicate found in marine habitats. The animal is mostly found in clubby shape. The body has a flat pouch like shape with 6-13 cms in length and wide is 4-7 cms. They are brownish. The animal is pretty hide in sand by means of foot. The body has two sharp angles, they are-branchial and atrial siphons. Branchial siphon has a branchial or incurve opening or mouth. The atrial siphon has atrial or excurrent hole or cloaca. Each hole is enclosed by four lips or lobes.
Now, let us find the solution from the option.
>A cephalochordate is an animal in the chordate subphylum, Cephalochordata.
>Hemichordata is a phylum of marine deuterostome animals, generally considered the sister unit of the echinoderms.
>Herdmania, is a protochordate, which belongs to subphylum Urochordata or Tunicata. Notochord is located only in the larva tail in urochordata.
>Protochordata is divided into the following three subphyla, they are- Hemichordata. Urochordata, cephalochordate.

Thus, the correct option is C. i.e. Urochordata.

Note: Herdmania is filter or ciliary feeder. Digestive tract is complete. Liver and pyloric glands are present. Respiration is with the help of branchial sac. Water invades the body from the region of the branchial hole or mouth, transferring via the pharynx where food is taken up. It comes out via an atrial hole or opening. The flow is controlled by cilia arranging in the gill slits. Water flow also assists in gaseous exchange.