The provided text describes the characteristics of organisms belonging to Phylum Porifera. Here are the key observations about Phylum Porifera: Cells are independent and lack tissue formation*. They are asymmetrical or radially symmetrical*. They are aquatic animals* found in freshwater or seawater. Their body is perforated with pores called ostia*, which allow water to enter the body for constant circulation. Water leaves the body through a single large opening called the osculum*. Their body is supported by a skeleton made of siliceous or calcareous spicules* and spongin fibers. Spicules can be needle-shaped, dumbbell-shaped, or star-shaped. The diagrams for labeling and identification are not fully visible in the image.