Which of the following animal groups is correctly paired with its characteristic?

Moderate

A

Cyclostomata - Skin is without scales and circulatory system is of open type
B

Osteichthyes - Marine and freshwater fishes with bony endoskeleton and ventral mouth
C

Chondrichthyes - Marine animals with streamlined body and have cartilaginous endoskeleton
D

Urochordata - Notochord extends from the head to the tail region and is persistent throughout the life

Solution

Chondrichthyes are marine animals with streamlined body and have cartilaginous endoskeleton.
Cyclostomes have a closed circulatory system.
Osteichthyes have a terminal mouth.
In urochordates, notochord is confined to the larval tail.

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