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Question

Hemichordates are not regarded as true chordates, because:

A
They are triploblastic.
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B
They do not possess a true notochord.
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C
They are bilaterally symmetrical.
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D
Both B and C
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Solution

The correct option is A Both B and C
Hemichordates share some but not all of the typical chordate characteristics and hence, are not true chordates.
Hemichordates do not possess a true notochord (presence of true notochord is a characteristic feature of chordates). Hence, they come under non-chordates.
So, the correct answer is option D.

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