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Standard X

Biology

Non-Chordates

Percentage of...

Question

Percentage of chordate animals is

3 - 5 %

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20 - 35 %

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70 - 80 %

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90 - 95 %

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Solution

The correct option is A 3 - 5 %
Chordates are animals, which posses a notochord, a hollow dorsal nerve cord, pharyngeal gill slits, and a post-anal tail for at least some period of their life cycles. Taxonomically, the phylum includes the subphylum Vertebrata, which includes mammals, Aves, reptiles, amphibians, and fishes. Chordates comprise 3-5 % of total animals in the animal kingdom.
So, the correct answer is option A.

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