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Animals devoid of respiratory, excretory and circulatory organs are
  • a)
    Tapeworms
  • b)
    Sponges
  • c)
    Threadworms
  • d)
    Liver Fluke
Correct answer is option 'B'. Can you explain this answer?
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Most Upvoted Answer
Animals devoid of respiratory, excretory and circulatory organs area)T...
Option B is correct becose sponges contains water canal system it is helps in nutrition, excretion, circulation, respiration.. water enters into the central body cavity (spongicole) by the help of ostia, water exit through the osculum.
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Community Answer
Animals devoid of respiratory, excretory and circulatory organs area)T...
Sponges do not have respiratory organs because they have a porous body. They neither have excretory organs and circulatory organs as circulation occurs by mean of canal system.
So, the correct answer is ' Sponges'.
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Animals devoid of respiratory, excretory and circulatory organs area)Tapewormsb)Spongesc)Threadwormsd)Liver FlukeCorrect answer is option 'B'. Can you explain this answer?
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