Gill slits persist throughout the life in
Cephalochordata
The correct option is B.
Explanation of the correct option:
Explanation of the incorrect options:
Option A:
Option C:
Urochordata is one of the subphyla of Chordata. The notochord is located only in the larval tail.
Option D:
Gill slits do not persist throughout life in Urochordata and Hemichordata.
Final answer: Gill slits persist throughout the life in Cephalochordata.