What are protochordates? How is it classified?
Protochordate is an organism that belongs to the lower chordates and is generally found in marine water. Their body is bilaterally symmetrical, triploblastic, and coelomate. At a certain stage of their lives, their bodies develop a long, rod-like structure called the notochord. There are three subphyla: - (i) Hemichordata (Half chordate) Example: - Balanoglossus (ii) Urochordata (Tail cord) Example: - Salpa & Herdmania (iii) Cephalochordata (Head cord) Example: - Amphioxus
