Which of the following systems is characteris | vedclass

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(B) Step $1$: Phylum $Porifera$ (sponges) are characterized by the presence of a water transport system, commonly referred to as the water canal syste

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Water canal system

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(B) Step $1$: Phylum $Porifera$ (sponges) are characterized by the presence of a water transport system, commonly referred to as the water canal system.Step $2$: Water enters the body through minute pores called $ostia$ in the body wall into a central cavity called the $spongocoel$, and exits through the $osculum$.Step $3$: This system is essential for food gathering, respiratory exchange, and the removal of waste products.Step $4$: Note that the 'water vascular system' is a characteristic feature of the phylum $Echinodermata$, not $Porifera$. Therefore, 'water canal system' is the most accurate description.

Which of the following systems is characteristic of the phylum $Porifera$?

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