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Question

The most primitive vertebrates are


A
Ostracoderms
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B
Cephalochordates
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C
Placoderms
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D
Cyclostomes
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Solution

The correct option is C Ostracoderms

 The most primitive vertebrates are jawless armored fishes called Ostracoderms. They are also called shell-skinned fishes and belong to the Paleozoic era. They include extinct groups like heterostracans and osteostracans and living groups including hagfishes and lampreys.

So, the correct answer is 'Ostracoderms'.


Biology

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