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Question
Which of the following sets of animals belong to class Cyclostomata?
Which of the following sets of animals belong to class Cyclostomata?
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Solution
The correct option is B Petromyzon and Myxine
Cyclostomata is the group of fishes with the rounded mouth. They lack jaws and have horny teeth. The teeth are retractable which means it can be drawn back. Petromyzon is a parasitic lamprey. It has rounded sucker like a moth. They have the eel-like body. The sharp retractable teeth are arranged in circular fashion. Myxine belongs to the genus of Hagfish. They have rounded mouth which lacks the jaws. It has paddle-like tails. It has tooth-like projections for feeding. The cartilaginous plate helps in the inward and outward movement of the teeth.So, the correct answer is option B.
Cyclostomata is the group of fishes with the rounded mouth. They lack jaws and have horny teeth. The teeth are retractable which means it can be drawn back. Petromyzon is a parasitic lamprey. It has rounded sucker like a moth. They have the eel-like body. The sharp retractable teeth are arranged in circular fashion. Myxine belongs to the genus of Hagfish. They have rounded mouth which lacks the jaws. It has paddle-like tails. It has tooth-like projections for feeding. The cartilaginous plate helps in the inward and outward movement of the teeth.
So, the correct answer is option B.
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