First slide
Classification of Animals
Question

Which of the following animals contain notochord only in larval tail?

Easy
Solution

Ascidia, Salpa and Doliolum belong to sub-phylum Urochordata. Branchiostoma belongs to sub-phylum Cephalochordata. Petromyzon  and Myxine belong to class Cyclostomata. In Urochordata, the notochord is present only in larval tail.

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