Which one is the first vertebrates to have evolved?
A
Jawless Fish
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B
Monkey
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C
Frog
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D
Horse
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Solution
The correct option is C Jawless Fish About 2000 million years ago the first cellular form of life appeared on earth. Before 500 mya, only invertebrates were formed, later around 350 mya Jawless fish evolved being the first vertebrate.