| 1. | In Cnidaria and Ctenophora, it is fully ectodermally derived.
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| 2. | Platyctenida is the only benthic group of organism in the phylum Ctenophora.
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| 3. | A Molecular Phylogenetic Framework for the Phylum Ctenophora using 18S rRNA Genes.
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| 4. | These are found in Cnidaria, Ctenophora and Echinodermata.
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| 5. | In 1888 he split Leuckart's Coelenterata into three phyla : Spongiaria, Cnidaria and Ctenophora.
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| 6. | The mesoglea is mostly acellular, but in both cnidaria and ctenophora the mesoglea contains muscle bundles and nerve fibres.
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| 7. | Other filter-feeding organisms include Brachiopoda, Branchiopoda, Bryozoa, Canalipalpata, Ctenophora, Echiura Entoprocta, " Urochordata.
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| 8. | Diploblastic animals, Cnidaria and Ctenophora, show an increase in complexity, having two germ layers, the endoderm and ectoderm.
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| 9. | They have also been observed feeding on gelatinous zooplankton, such as jellyfish ( Scyphozoa ) and comb jellies ( Ctenophora ).
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| 10. | Porifera either came about as a result of the divergence with Cnidaria and Ctenophora or they lost the function of the gene encoding Nav channels.
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