Question

Match the following.

$\begin{array}{cc}Subphylum& Characteristic\\ \text{(1) Vertebrata}& \text{(A) Notochord present throughout the body}\\ \text{(2) Urochordata}& \text{(B) Notochord replaced by a vertebral column}\\ \text{(3) Cephalochordata}& \text{(C) Notochord present only at tail region}\end{array}$

• A. Cephalochordata
• B. Urochordata
• C. Vertebrata
• D. Craniata

Answer 1

The correct option is B Urochordata

The phylum Chordata is classified into 3 subphyla. In sub phylum urochordata, notochord is only present in the tail region of larvae. In cephalochordata, the notochord is present throughout their body length. In vertebrata, the notochord is replaced by the vertebral column.