Question

) The division of animal into chordates and non-chordates is based on the presence
or absence of a
a) notochord
b) vertebral columu
c) spinal cord
d) nerve cord​

Answer 1

Answer:

your answer is (B) vertebral columu

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Answer 2

Answer:

Based on the presence and absence of notochord animals are distinguished into chordates and nonchordates.

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