Ciliated comb-like plates (called ctenes); 2 long tentacles; hasa complete gut; sticky colloblast cells used for capturing prey
Radial symmetry (bi-radial due to having the two longtentacles); diploblastic; hermaphrodite (releases both egg andsperm);
Comb jelly (no need to know specific one for this group)
Platyhelminthes
Rotifera
Mollusca
Annelida
Nematoda
Arthropoda
Echinodermata
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1Porifera common name Sponges CharactersBody with pores and canals in wallsSponges have a water transport or canal system Additional traitshermaphrodite ie eggs and sperms are produced by the same individualFertilisation is internal and development is indirect having a larval stage which is morphologically distinct from the adultSponges are mostly asymmetricalCellular level of organisation ExamplesSycon Euspongia Spongilla etc 2Cnidariacommon name Coelenterata CharactersCnidoblasts present for anchorage defense and for the capturing which contain stinging capsules Additional traitsdiploblasticembryonic layers divide into ecto and endodermRadial symmetrybody planTissue level of oraganisationCnidarians exhibit two basic body forms called polyp and medusa And Exhibit alternation of generation Metagenesis ExamplesPhysalia Adamsia Pennatula Gorgonia and Meandrina etc
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