uniknont diversity III - Bio 6.pdf - Unikont diversity III...

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Unikont diversity IIII.Basal animalsA.Phylum poriferaB.Phylum cnidaria→ CC basal animals, derived charactersII.Introduction to bilateriaA.Shared derived charactersB.ProtostomesC. Deuterostomes→ CC derived characters of bilateria, protostomes, deuterostomesIII.Lophotrochozoa cladeA.Shared derived charactersB.Phylum platyhelminthesC.Phylum rotiferaD.Phylum molluscaE.Phylum annelida→ CC derived characters, member phylaIV.Ecdysozoa cladeA.Shared charactersB.Phylum nematodaC.Phylum arthropoda→ CC derived characters, member phyla
I.Basal animalsA.Phylum Porifera(‘to have spores’ - sponges)Basal metazoansLeast complex animals1.Characteristicsa)Multicellular and extracellular matrixb)No tissues or organsc)Asymmetric2.Simple sponge morphologya)Sac like body with tiny holesb)Osculum- open endc)Spongocoel(1)Central cavity(2)Passage for water(3)Filter feeders (not a digestive chamber)(4)d)Choanocytes(1)Flagellated cells(2)Line spongocoel(3)Ingest bacteria and tiny food particles(4)Very similar to choanoflagellates (protists)

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Term
Spring
Professor
N/A
Tags
Cnidaria, Phylum, Annelid

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