The most important distinctive characteristic of Chordata is the presence of:
Vertebral column
Hairy skin
Notochord
All of the above
A
Vertebral column
B
Hairy skin
C
Notochord
D
All of the above
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Solution
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The vertebral column is the characteristic of vertebrates only.
Hairy skin is characteristic of mammals and in mammals, aquatic mammals don't have hair.
All chordates are characterized by the presence of a notochord. It is a rod-like structure, which provides support to the body of chordates in all embryonic stages and is also, present in some adult stages.
So, the correct answer is option C.
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