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Exploring Invertebrate Evolution: From Porifera to Arthropods

Delve into the diverse world of invertebrates, from the simple structures of Porifera and Cnidaria to the complex adaptations of Arthropods. Learn about their body structures, life cycles, and evolutionary paths across the animal kingdom. Discover the unique features of mollusks, annelids, nematodes, and echinoderms. Unravel the mysteries of segmented worms, jointed animals, and more in this comprehensive exploration of invertebrate biology.

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Exploring Invertebrate Evolution: From Porifera to Arthropods

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  1. Pre AP Biology Animal Kingdom – Invertebrates (8.15) Part 1

  2. Invertebrate Evolutionary Path

  3. Porifera

  4. Porifera Body Structure

  5. Cnidaria Body Structure

  6. Life Cycle showing both forms

  7. Cnidocytes on Tentacles

  8. Platyhelminthes

  9. Platyhelminthes Body Structure

  10. Flame Cells

  11. Turbellaria

  12. Trematodes (Flukes)

  13. Cestoidea (Tapeworms)

  14. Pre AP Biology Animal Kingdom – Invertebrates (8.15) Part 2

  15. Mollusks

  16. Basic Mollusk Structure

  17. Polyplacophora (“many plates”)

  18. Gastopoda (“stomach foot”)

  19. Basic Snail Body Structure

  20. Bivalvia

  21. Basic Bivalve Body Structure

  22. Cephalopoda (“head foot”)

  23. Pre AP Biology Animal Kingdom – Invertebrates (8.15) Part 3

  24. Annelids (“segmented worms”)

  25. Annelid Body Structure

  26. Closed Circulatory System

  27. Oligiochaeta (Earthworm)

  28. Polychaeta (Marine Worms)

  29. Hirudinea (leach)

  30. Nematoda (Round, unsegmented worms)

  31. Pseudocoelomates

  32. Pre AP Biology Animal Kingdom – Invertebrates (8.15) Part 4

  33. Arthropods (Jointed animals)

  34. Arthropods

  35. High Degree of Cephalization Sensory Organ accumulation in the anterior

  36. Open Circulatory System

  37. Respiration – Gills for water

  38. Respiration - Tracheal Tubes

  39. Cheliceriform Body Structure

  40. Horseshoe Crabs

  41. Scorpion

  42. Myriapods - Millipede

  43. Myriapods - Centipede

  44. Hexapoda

  45. Insect Body Structure

  46. Complete Metamorphosis

  47. Pollinators

  48. Crustaceans

  49. Pre AP Biology Animal Kingdom – Invertebrates (8.15) Part 5

  50. Echinodermata

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