Animals devoid of respiratory,excretory and c | vedclass

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(B) Sponges belong to the phylum $Porifera$.These organisms possess a cellular level of organization and lack specialized tissues or organ systems.Due

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Sponges

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(B) Sponges belong to the phylum $Porifera$.These organisms possess a cellular level of organization and lack specialized tissues or organ systems.Due to the absence of complex organ systems,they do not have dedicated respiratory,excretory,or circulatory organs.Instead,they rely on a water transport system (canal system) for the exchange of gases,excretion of waste,and circulation of nutrients throughout their body.

Animals devoid of respiratory,excretory and circulatory organs are

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