Q30 of 72 Page 204

Real organs are absent in:

Coelentrata is the second phylum of kingdom animilia which do not contain any real organ. The body of the organism is diploblastic, acoelomate. All the members of phylum coelentrata are aquatic.

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Which of the following is not a criterion for classification of living organisms?

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The feature that is not a characteristic of protochordate?

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Hard calcium carbonate structures are used as a skeleton by:

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Pteridophyta do not have: