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Unit 2 so far..

Unit 2 so far.. . A practice “quiz”. #1. Most animals produce exclusively _____ and the ___ stage is the most prominent. #2 . Name the 3 germ layers and what each one will eventually give rise to. #3. Define diploblastic and triploblastic. #4.

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Unit 2 so far..

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  1. Unit 2 so far.. A practice “quiz”

  2. #1 • Most animals produce exclusively _____ and the ___ stage is the most prominent

  3. #2 • Name the 3 germ layers and what each one will eventually give rise to

  4. #3 • Define diploblastic and triploblastic

  5. #4 • Which group of more ancient organisms do we consider to be the ancestor of animals?

  6. #5 • Describe the fate of the blastopore in protostomes and deuterostomes?

  7. #6 • What phylum do sponges belong to?

  8. #7 • Describe the mature sponge structure

  9. #8 • How do sponges trap food particles?

  10. #9 What phylum does this organism belong to?

  11. #10 • What kind of symmetry do Cnidarians exhibit?

  12. #11 • What are cnidocytes?

  13. #12 • Describe coral reproduction

  14. #13 • What phylum does this organism belong to?

  15. #14 • What phylum does this organism belong to?

  16. # 15 • Do members of phylum Annelida have a complete digestive system?

  17. Answer slide • # 1 – sexually, diploid • #2 – ectdoderm = epidermis and nervous tissue, mesoderm = circulatory system, muscles, and most other organs, endoderm = lining of the digestive tract • #3 – diploblastic = two germ layers; triploblastic = 3 germ layers • #4 – Choanoflagellates • #5 – Protostomes = becomes mouth, Deuterostomes = becomes anus • #6 – Porifera • #7 – consists of 2 layers of cells separated by a gelatinous region • # 8 - Choanocytes

  18. Answer slide • #9 – Phylum Cnidaria • #10 – Radial symmetry • #11 – A specialized type of cell found only in members of phylum Cnidaria. Have capabilities of injecting poison • #12 – Fertilization is external • #13 – Phylum Rotifera • #14 – Platyhelminthes • # 15 - YES

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