Sponges Phylum Porifera. Sponges have specialized cells and an endoskeleton. They are in the phylum porifera and there are about 5,000 different known. sponges are aquatic invertebrates. the approximately 8,550 living sponge species are scientifically classified in the phylum porifera, which is comprised of four distinct classes: animals in subkingdom parazoa represent the simplest animals and include the sponges, or phylum porifera (figure 15.2.1 15.2. A thin, perforated outer epidermal layer covers a porous skeleton, which is composed of interlocking spicules of calcium carbonate, silica, or spongin (found in 80% of all sponges), a proteinaceous material. simple sponges are hollow cylinders with a large opening at the top through which water and wastes are expelled. the approximately 5,000 living sponge species are classified in the phylum porifera, which is composed of three distinct. They make up the phylum porifera.
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the approximately 8,550 living sponge species are scientifically classified in the phylum porifera, which is comprised of four distinct classes: simple sponges are hollow cylinders with a large opening at the top through which water and wastes are expelled. They make up the phylum porifera. animals in subkingdom parazoa represent the simplest animals and include the sponges, or phylum porifera (figure 15.2.1 15.2. Sponges have specialized cells and an endoskeleton. They are in the phylum porifera and there are about 5,000 different known. sponges are aquatic invertebrates. A thin, perforated outer epidermal layer covers a porous skeleton, which is composed of interlocking spicules of calcium carbonate, silica, or spongin (found in 80% of all sponges), a proteinaceous material. the approximately 5,000 living sponge species are classified in the phylum porifera, which is composed of three distinct.
Sponges Phylum Porifera the approximately 5,000 living sponge species are classified in the phylum porifera, which is composed of three distinct. A thin, perforated outer epidermal layer covers a porous skeleton, which is composed of interlocking spicules of calcium carbonate, silica, or spongin (found in 80% of all sponges), a proteinaceous material. the approximately 5,000 living sponge species are classified in the phylum porifera, which is composed of three distinct. simple sponges are hollow cylinders with a large opening at the top through which water and wastes are expelled. animals in subkingdom parazoa represent the simplest animals and include the sponges, or phylum porifera (figure 15.2.1 15.2. They make up the phylum porifera. the approximately 8,550 living sponge species are scientifically classified in the phylum porifera, which is comprised of four distinct classes: sponges are aquatic invertebrates. They are in the phylum porifera and there are about 5,000 different known. Sponges have specialized cells and an endoskeleton.
