First slide

Classification of Animals

Question

Read the following statements and choose the correct one for the members of subphylum Vertebrata.

Moderate

A

They possess notochord during the adult stage.
B

They do not possess notochord during the embryonic period.
C

They do not possess notochord either in embryonic period or in the adult stage.
D

They possess notochord during the embryonic period.

Solution

The members of subphylum Vertebrata possess notochord during the embryonic period. The notochord is replaced by a cartilaginous or bony vertebral column in the adult. In some others like cephalochordates, notochord is persistent throughout the life.

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