Chapter 2 Animal Kingdom Part 2 (Phylum Porifera and Coelenterata, Ctenophora) by TEACHING CARE online tuition and coaching classes Animal Kingdom Part 2 (Phylum Porifera, Coelenterata and Ctenophora) Phylum Porifera / Parazoa / Sponges: The porifera are the lowest multicellular animals (metazoans) without definite true tissues. In other words, they have “cellular level” of […]