The pathway of enersing and coming out of water in sponges is known as________.

Explanation

**Step-by-Step Solution:**

1. **Understanding Sponges**: Sponges are simple aquatic animals that belong to the phylum Porifera. They have a unique body structure that allows them to filter water for food.

2. **Water Pathway**: The pathway through which water enters and exits the sponge is crucial for its feeding and respiration.

3. **Inflow of Water**: Water enters the sponge through small openings called ostia (singular: ostium). These pores are distributed throughout the sponge's body.

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