Describe the canal system of porifera
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The canal system helps the sponges in nutrition, respiration, excretion and reproduction. The current of water which flows through the canal system brings the food and oxygen and takes away the carbon dioxide, nitrogenous wastes and faeces. It carries the sperms from one sponge to another for fertilisation of the ova.
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The canal system helps the sponges in nutrition, respiration, excretion and reproduction. The current of water which flows through the canal system brings the food and oxygen and takes away the carbon dioxide, nitrogenous wastes and faeces. It carries the sperms from one sponge to another for fertilisation of the ova.
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