Internal shell is present in
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Internal shell is present in
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Head. Foot and visceral mass-this combination of characters is diagnostic of
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Which of the following includes coelomate unsegmented organisms?
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The mouth parts of house fly are of
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A photosensitive part of insect ommatidium is
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The communication in bees by special body movements (dances) was discovered by
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Flame cells are the excretory structures for
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Nematoda- roundworms, pseudocoelomate
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Salamander belongs to the class
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Identify the characteristic of acoelomates
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Which class has the largest number of animals?
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Which of the following are not Viviparous
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