Characteristics
1. Are asymmetrical or superficially radially symmetrical.
2. Have three cells types: pinacocytes, mesenchyme cells, and choanocytes.
3. They have a central cavity or a series of branching chambers. Through these chambers water circulates whenever these organism filter feed.
4. No tissues or organs.
2. Have three cells types: pinacocytes, mesenchyme cells, and choanocytes.
3. They have a central cavity or a series of branching chambers. Through these chambers water circulates whenever these organism filter feed.
4. No tissues or organs.