______ are devoid of respiratory, excretory and circulatory organs.
Threadworms
Sponges
Tapeworms
Liver fluke
Additional Questions
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Phylum that doesn t have a true coelom is |
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Who wrote the book ‘Systema Naturae’? |
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Which one of the following animals shows discontinuous distribution? |
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The radially symmetrical cnidarians have a ______ body in two distinct layers |
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The cells absent in gastrodermis of Hydra are |
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Echolocation is usually associated with |
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Cell tissue grade of organization occurs in |
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Which statement is correct regarding reptiles, birds, and mammals? |
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What is common between kiwi, penguin and ostrich? |
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Ichthyophis is a |
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