![Phylum Porifera: Sponges have specialized cells but no tissues; no symmetry –Sponges are the most primitive animals on Earth 570 million year old fossils. - ppt download Phylum Porifera: Sponges have specialized cells but no tissues; no symmetry –Sponges are the most primitive animals on Earth 570 million year old fossils. - ppt download](https://slideplayer.com/7479248/24/images/slide_1.jpg)
Phylum Porifera: Sponges have specialized cells but no tissues; no symmetry –Sponges are the most primitive animals on Earth 570 million year old fossils. - ppt download
![Sponges Sponges, phylum Porifera, are invertebrates made up of two cell layers. Most sponges are asymmetrical. They have no tissues, organs, or organ. - ppt video online download Sponges Sponges, phylum Porifera, are invertebrates made up of two cell layers. Most sponges are asymmetrical. They have no tissues, organs, or organ. - ppt video online download](https://slideplayer.com/slide/6456491/22/images/2/Sponges+Sponges%2C+phylum+Porifera%2C+are+invertebrates+made+up+of+two+cell+layers.+Most+sponges+are+asymmetrical..jpg)
Sponges Sponges, phylum Porifera, are invertebrates made up of two cell layers. Most sponges are asymmetrical. They have no tissues, organs, or organ. - ppt video online download
![Digestive cell types and tissues of choanoflagellates (a), sponges (b),... | Download Scientific Diagram Digestive cell types and tissues of choanoflagellates (a), sponges (b),... | Download Scientific Diagram](https://www.researchgate.net/publication/335024461/figure/fig4/AS:960999863640064@1606131630137/Digestive-cell-types-and-tissues-of-choanoflagellates-a-sponges-b-ctenophores-c.png)
Digestive cell types and tissues of choanoflagellates (a), sponges (b),... | Download Scientific Diagram
Why are poriferans referred to as having a cellular grade of body construction despite being multicellular organisms? - Quora
![KINGDOM? Purple Tube Sponge ANIMALIA. PHYLUM? PORIFERA “Porifera” means? “Pore- bearer” - ppt download KINGDOM? Purple Tube Sponge ANIMALIA. PHYLUM? PORIFERA “Porifera” means? “Pore- bearer” - ppt download](https://images.slideplayer.com/12/3559974/slides/slide_7.jpg)