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The described traits are representative of the phylum Porifera.

1. The described traits are representative of the phylum Porifera.
2. Organisms in Ctenophora, Cephalochordata, and Echinodermata are found only in marine environments.
3. Gorgonia (sea fan) is classified as an animal, and all animals lack a cell wall.
4. Platyhelminthes exhibit bilateral symmetry and are triploblastic.

Correct answer: The described traits are representative of the phylum Porifera.

Solution

Option A is correct because the question itself states that the given characteristic features define the phylum Porifera, which is accurate. Porifera are simple, multicellular animals with porous bodies.

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