Q. Which of the following statements is/are not true?
1. In Urochordata, notochord is present only in larval tail.
2. In Cephalochordata, notochord extends from head to tail region.
3. Branchiostoma belongs to Hemichordata.
4. Only one class of living members, Class Cyclostomata represents the super class Agnatha.

 1493  188 Animal Kingdom Report Error

Solution:

Branchiostoma belongs to the subphylum cephalochordota. Cephalochordates possess the three primary chordate characters such as notochord, dorsal tubular nerve cord \& pharyngeal gill slits, in simple condition throughout life. Branchiostoma is a marine animal commonly found in shallow waters, on the sandy coasts. It is a small elongated fish like animal 5 to in length.