First slide

Classification of Animals

Question

Jawed vertebrate in which the notochord is persistent throughout life is

Moderate

A

Petromyzon
B

Sphenodon
C

Scoliodon
D

Doliolum

Solution

Scoliodon (Chondrichthyes) is a jawed vertebrate in which the notochord is persistent throughout life.
Petromyzon (Cyclostomata) is a jawless vertebrate with persistent notochord.
Doliolum is a non-vertebrate chordate where notochord is present in its larval tail.
Sphenodon is a vertebrate where notochord is confined to embryonic stage.

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