div class=trans-pagebuttonPage 1button div class=trans-image amp-img class=trans-thumb alt=Page 1: Porifera Sponges - Bioinformatics Leipzig · Germ layers Endoderm Mesoderm Ectoderm Dorsal Vertebrates Ventral gut liverlungs form coelom Germ layers Organs gut Dorsal Insects src=https:reader030fdocumentsinreader030viewer20220331185d4df54688c99308768b9ae2html5thumbnails1jpg width=142 height=106 layout=responsive amp-img divpPorifera Spongespdiv