Subphylum urochordata and cephalochordata

Give the characteristics features of the following citing one example of each (a) Chondrichthyes and osteichthyes (b) Urochordata and cephalochordata

Hemichordata and Urochordata

Which of the following statements are true for the phylum-Chordata? (a) In urochordata notochord extends from head to tail and it is present throughout their life. (b) In vertebrata notochord is present during the embryonic period only. (c) Central nervous system is dorsal and hollow. (d) Chordata is divided into 3 subphyla: Hemichordata,Tunicata and Cephalochordata.

The phylum which was earlier considered as a subphylum under chordata but now placed as a separate phylum, in non-chordates is

A member of cephalochordata is

Members of Cephalochordata are

in urochordata notochord is found in

Which of the following statements is/are not true A. In Urochordata, notochord is present only in larval tail. B. In Cephalochordata, notochord extends from head to tail region. C. Branchiosoma belongs to Hemichordata D. Only one Class of living members, Class Cyclostomata represents the Super Class Agnatha.

Statement-1 : Cephalochordata bears notochord all along the body throughout life Statement-2 Urochordate bears vertebral column only in tail region throughout the life Then which is correct?

Urochordata or tunicata is