Biology 1744 Spring 2010
Introduction <ul><li>Taxonomy/ Microscopy </li></ul><ul><li>Complete Taxonomy </li></ul><ul><li>Writing assignment </li></...
Summary of Taxonomy <ul><li>Taxonomy-  is the science of  classification  (categorizing) and  nomenclature  (naming) for l...
Compound Microscope <ul><li>Major Components: </li></ul><ul><ul><li>Oculars (10x) </li></ul></ul><ul><ul><li>Objective Len...
Dissection/Stereo Microscope <ul><li>Major Structures: </li></ul><ul><ul><li>Oculars (eyepiece) </li></ul></ul><ul><ul><li...
Animal Kingdom <ul><li>Multicellular, eukaryotic, ingestive heterotrophs without cell walls </li></ul><ul><li>Capable of s...
Animal kingdom <ul><li>Criteria used to differentiate between animal groups includes </li></ul><ul><li>1. level of organiz...
Phylum Porifera <ul><li>Porifera = “to bear holes” </li></ul><ul><li>sessile,  filter feeders   </li></ul><ul><li>Multicel...
Porifera (classes) <ul><li>3 main classes </li></ul><ul><li>Calcarea- spicules made of calcium. ( Grantia ) </li></ul><ul>...
 
Key terms <ul><li>Porocytes </li></ul><ul><li>Amoebocytes </li></ul><ul><li>Choanocytes </li></ul><ul><li>Epithelial cells...
 
Structure
Assignment <ul><li>Pages 388-391. Do all highlighted regions and answer all questions 1-4. </li></ul><ul><li>For  procedur...
Phylum Cnidaria <ul><ul><li>Classes </li></ul></ul><ul><ul><li>Hydrozoa (hydras) </li></ul></ul><ul><ul><li>Scyphozoa (jel...
Cnidaria <ul><li>Radically symmetrical </li></ul><ul><li>More complex than Porifera </li></ul><ul><li>carnivores </li></ul...
Characteristics <ul><li>Level of organization = tissue (2); ectoderm and endoderm, held together by gelatinous mesoglea </...
 
compare <ul><li>Compare Poriferans with Cnidarias </li></ul>
Body forms: polyp and medusa
 
Class Hydrozoa <ul><li>polyp stage dominates </li></ul><ul><li>Examples: hydra (no medusae)  </li></ul><ul><li>Obelia (pol...
Class Scyphozoa (jellyfish) <ul><li>Medusae dominates the life cycle. </li></ul><ul><li>Large mesoglea </li></ul><ul><li>F...
Class Anthozoa <ul><li>Anemones  </li></ul><ul><li>Corals (smaller/colonial) </li></ul><ul><li>Largest class of Cnidarians...
 
Gonionemus
Compare  <ul><li>Name differences between Hydrozoa life cycles and Scyphozoa life cycles </li></ul>
Today’s Activities <ul><li>Pages 393-399 questions 6-10 and all highlighted procedures. </li></ul><ul><li>Afterwards, clea...
Pre lab #2 due 2/5 <ul><li>Read Ex. 37- Phyla Platyhelminthes & Nematoda </li></ul><ul><li>1. list characteristics for eac...
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Porifera%20and%20cnidaria%202010

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Porifera%20and%20cnidaria%202010

  1. 1. Biology 1744 Spring 2010
  2. 2. Introduction <ul><li>Taxonomy/ Microscopy </li></ul><ul><li>Complete Taxonomy </li></ul><ul><li>Writing assignment </li></ul><ul><li>quizzes </li></ul><ul><li>Animal Kingdom </li></ul><ul><li>Phylum Porifera </li></ul><ul><li>Phylum Cnidaria </li></ul><ul><li>Clean Lab. </li></ul><ul><li>Quiz </li></ul>
  3. 3. Summary of Taxonomy <ul><li>Taxonomy- is the science of classification (categorizing) and nomenclature (naming) for living things. </li></ul><ul><li>Organisms are classified according to phylogeny (relation of species, and order of evolution), and then given a binomial name (Genus species ). </li></ul><ul><li>3 main domains: Bacteria, Archaea, Eukarya </li></ul>
  4. 4. Compound Microscope <ul><li>Major Components: </li></ul><ul><ul><li>Oculars (10x) </li></ul></ul><ul><ul><li>Objective Lenses </li></ul></ul><ul><ul><li>Fine and Coarse adjustment knob </li></ul></ul><ul><ul><li>Condenser (iris) </li></ul></ul><ul><ul><li>Condenser adjustment knob </li></ul></ul><ul><ul><li>Stage </li></ul></ul>
  5. 5. Dissection/Stereo Microscope <ul><li>Major Structures: </li></ul><ul><ul><li>Oculars (eyepiece) </li></ul></ul><ul><ul><li>Focus </li></ul></ul><ul><ul><li>Lens </li></ul></ul><ul><ul><li>Light Sources </li></ul></ul>
  6. 6. Animal Kingdom <ul><li>Multicellular, eukaryotic, ingestive heterotrophs without cell walls </li></ul><ul><li>Capable of sexual reproduction </li></ul><ul><li>Glucose reserves stored as glycogen </li></ul><ul><li>Nerve and muscle cells/tissues unique to animals </li></ul>
  7. 7. Animal kingdom <ul><li>Criteria used to differentiate between animal groups includes </li></ul><ul><li>1. level of organization </li></ul><ul><li>2. symmetry </li></ul><ul><li>3. body plan </li></ul><ul><li>4. embryological development </li></ul><ul><li>5. germ tissues present & derived structures </li></ul>
  8. 8. Phylum Porifera <ul><li>Porifera = “to bear holes” </li></ul><ul><li>sessile, filter feeders </li></ul><ul><li>Multicellular </li></ul><ul><li>No tissues, nerves, muscles, organs. </li></ul><ul><li>Reproduce sexually & asexually </li></ul><ul><li>Typically asymmetrical </li></ul><ul><li>Heterotrophs or autotrophs? </li></ul><ul><li>Why? </li></ul>
  9. 9. Porifera (classes) <ul><li>3 main classes </li></ul><ul><li>Calcarea- spicules made of calcium. ( Grantia ) </li></ul><ul><li>Demospongia- spicules contain spongin fibers. ( Spongia ) </li></ul><ul><li>Hexacinellida- spicules made of silica. ( Euplectella ) </li></ul>
  10. 11. Key terms <ul><li>Porocytes </li></ul><ul><li>Amoebocytes </li></ul><ul><li>Choanocytes </li></ul><ul><li>Epithelial cells </li></ul><ul><li>Osculum </li></ul><ul><li>Spicules </li></ul><ul><li>Spongocoel </li></ul><ul><li>mesenchyme </li></ul>
  11. 13. Structure
  12. 14. Assignment <ul><li>Pages 388-391. Do all highlighted regions and answer all questions 1-4. </li></ul><ul><li>For procedure 36.1 , use only prepared slides </li></ul><ul><li>Remember to draw and label on your own paper. </li></ul><ul><li>Also use the animal comparison chart </li></ul>
  13. 15. Phylum Cnidaria <ul><ul><li>Classes </li></ul></ul><ul><ul><li>Hydrozoa (hydras) </li></ul></ul><ul><ul><li>Scyphozoa (jellyfish) </li></ul></ul><ul><ul><li>Anthozoa (corals & anemones) </li></ul></ul>
  14. 16. Cnidaria <ul><li>Radically symmetrical </li></ul><ul><li>More complex than Porifera </li></ul><ul><li>carnivores </li></ul><ul><li>2 basic body types: Polyps & Medusae </li></ul><ul><li>Polyps= sessile/ Medusae=free swimming </li></ul><ul><li>Classes are classified by the dominance of each stage respectively. </li></ul><ul><li>Some alternate between body types = Polymorphism. </li></ul>
  15. 17. Characteristics <ul><li>Level of organization = tissue (2); ectoderm and endoderm, held together by gelatinous mesoglea </li></ul><ul><li>Symmetry = radial </li></ul><ul><li>Body plan = sac-like (common opening) </li></ul><ul><li>Unique features = cnidocytes (stinging cells) with nematocysts (stinging structure); some exhibit polymorphism in the life cycle </li></ul>
  16. 19. compare <ul><li>Compare Poriferans with Cnidarias </li></ul>
  17. 20. Body forms: polyp and medusa
  18. 22. Class Hydrozoa <ul><li>polyp stage dominates </li></ul><ul><li>Examples: hydra (no medusae) </li></ul><ul><li>Obelia (polymorphic) </li></ul><ul><li>physalia (portuguese man-of-war)(polymorphic) </li></ul><ul><li>Gonionemus (polymorphic)(large medusae) </li></ul>
  19. 23. Class Scyphozoa (jellyfish) <ul><li>Medusae dominates the life cycle. </li></ul><ul><li>Large mesoglea </li></ul><ul><li>Free swimming </li></ul><ul><li>Reduced polyp stage </li></ul><ul><li>Aurelia , Cassiopeia </li></ul>
  20. 24. Class Anthozoa <ul><li>Anemones </li></ul><ul><li>Corals (smaller/colonial) </li></ul><ul><li>Largest class of Cnidarians </li></ul><ul><li>No medusa stage </li></ul>
  21. 26. Gonionemus
  22. 27. Compare <ul><li>Name differences between Hydrozoa life cycles and Scyphozoa life cycles </li></ul>
  23. 28. Today’s Activities <ul><li>Pages 393-399 questions 6-10 and all highlighted procedures. </li></ul><ul><li>Afterwards, clean workstations, return slides to boxes, turn off and unplug microscopes, maintain sinks and common areas. </li></ul>
  24. 29. Pre lab #2 due 2/5 <ul><li>Read Ex. 37- Phyla Platyhelminthes & Nematoda </li></ul><ul><li>1. list characteristics for each phylum </li></ul><ul><li>2. list characteristics and representatives for each platyhelminth class </li></ul><ul><li>3. generally describe the life cycle of the intestinal nematode </li></ul>

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