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Standard IX
Biology
Porifera
Canal system ...
Question
Canal system is a trait found in
A
Sponges
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B
Corals
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C
Echinoderms
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D
Molluscs
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Solution
The correct option is
D
Sponges
Poriferans have a characteristic water canal system. Canal system helps in respiration, excretion, circulation, nutrition etc. Sponges are Poriferans.
So, the correct answer is 'Sponges'.
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