One example of animals having a single opening to the outside that serves both as mouth as well as anus is
Fasciola
Octopus
Asterias
Ascidia
Additional Questions
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Radula is found in |
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Which one of the followings belongs to platyhelminthes? |
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Which of the following possesses post anal tail? |
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Who formed the key for identification of animals |
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Animals are motile because they have |
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Which phylum has a true coelom? |
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A fat called blubber could be obtained from |
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Which one of the following phylum is characterized by absence of true coelom? |
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Which one of the following pairs of animals comprises jawless fishes? |
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In a sponge the whole inner surface of the asconoid is lined by |
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