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Comparison ?’s

Comparison ?’s. A. How many of the following organisms are Deuterostomes? B. Give the letter(s) of all organism(s) with incomplete digestive systems. How many phyla/classes are represented here? Read Q’s carefully. Compare traits and group Phyla when studying!!!.

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Comparison ?’s

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  1. Comparison ?’s • A.How many of the following organisms are Deuterostomes? • B. Give the letter(s) of all organism(s) with incomplete digestive systems. • How many phyla/classes are represented here? Read Q’s carefully Compare traits and group Phyla when studying!!!

  2. Quick Review • Diploblastic- 2 Cell Layers • Triploblastic- 3 Cell Layers

  3. Quick Review • Diploblastic - 2 Cell Layers PhylumCnidaria • Triploblastic- 3 Cell Layers PhylumPlatyhelminthes onward…

  4. Levels of Organization Cell TissueOrgan What level of organization do we see in Kingdom Protista?

  5. Level of Organization Cell- PhylumPorifera Tissue- PhylumCnidaria Organ - PhylumPlatyhelminthesonward… Kingdom Protista – acellular or unicelullar??????

  6. Symmetry RadialWhere did we first see this? Bilateral And this? Pentaradial And this?

  7. Symmetry RadialPhylumCnidaria BilateralPhylumPlatyhelminthes onward… PentaradialPhylumEchinodermata except ………Holothuroidea which exhibit secondary bilateral symmetry

  8. Digestive Systems Incomplete (No anus) Can you name 2 phyla? Complete (Have an anus) Can you name 2 phyla?

  9. Digestive Systems Incomplete (No anus) PhylumCnidaria PhylumPlatyhelminthes Complete (Have an anus) PhylumNemertina onward… (no anus in C. Ophiuroidea!)

  10. Body Cavity Acoelomates2 phyla Phylum Platyhelminthes Phylum Nemertina Pseudocoelomates2 phyla Phylum Nematoda Phylum Rotifera (Eu)Coelomates6 phlya Phylum Annelida Phylum Arthropoda Phylum Mollusca Phylum Bryozoa Phylum Echinodermata Phylum Chordata

  11. Coelom Development Schizocoelous (BAAM) PhylumAnnelida PhylumArthropoda PhylumMollusca PhylumBryozoa Enterocoelous PhylumEchinodermata PhylumChordata Endoderm, Ectoderm, Mesoderm, Coelom

  12. Protostomes(4 phyla) Protostomes, and Spiral cleavage, Schizocoelous, Determinate B “PaSSeDit!” (BAAM) APhylum Annelida MPhylum Arthropoda Phylum Mollusca Phylum Bryozoa

  13. Deuterostomes(2 Phyla) Radial cleavage, Enterocoelous Deuterostomes, Indeterminate “REDI” for anything! C PhylumEchinodermata PhylumChordata

  14. Study Ideas Make lists of structures for common purposes e.g. Book lungs, book gills, trachea and spiracles and know the organisms that have them. e.g. Malpighian tubules, Renette glands, protonephridia, Flames cells etc…. e.g. Statoblasts, gemmules, cryptobiotic eggs

  15. Be able to definethese terms and identify organisms that illustrate them • Cephalization Metamerizism • Tagmetization Homology • Serial Homology Polymorphism • Torsion Detorsion • Ecdysis This list is not exhaustive….add to it yourself!

  16. Memory tip! • Learn the exceptions to the rules, the oddities (I love to test on those!) Make sure you understand why they are tricky though Fire coral is NOT a coral….it has a medusa Turbellaria is the only free-living class in Platyhelminthes; other two are parasitic Ophiuroidea - no anus Brittle stars - no tube feet Holothuroidea - secondarily bilaterally symmetrical

  17. And finally… • Make a list of all of the unusual terms and structures you have come across and make sure you know where they fit in the “big picture.” Epitoky, respiratory tree, mastax, trophi, trochus, septa, annulus, typhlosole, avicularia, crop, gizzard, parapodia, acicula, trochophore, ….. Sounds like a song from Nemo!

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