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