1. Exam 3 slides
Bio 2

2. • Phylum:
– Porifera
• Structure:
– spongin
• Molecule:
– collagen

3. • Phylum:
– porifera
• Structure:
– Spicules
• Molecule:
– calcium carbonate
– or silicon

4. Sponge/scypha
• Phylum:
– porifera
• Class:
– calcarea
• Canal type:
– synconoid

5. Sponge 1.s
scypha
Cell:
Ameobocytes/
archyocytes
amphiblastula
spongocoel
apopyl
Layer:
Cell:
mesoglea
choanocytes
Opening here:
prosopyle
Radial ostium Incurrent canal
canal

6. Scypha
spongocoel
Incurrent
canal
Radial canal apopyle

7. Sponge gemmules
Sponge
spicules
Sponge gemmules

8. Leucosolenia
osculum

9. Leucosolenia
• Phylum:
– Porifera
• Class:
– calcarea
• Canal system:
– asconoid
osculum

10. Obelia young medusa strew
Genus:
Obelia
Class:
Hydrozoa
Structures:
medusa buds

11. Obelia young medusa strew

12. Obelia young medusa strew

13. Aurelia planula larve
jelly fish
Phylum:
Cnidarian
Structure:
planula
Locomotion:
cilia

14. Aurelia ephyra
Class:
scyphazoa
Genus:
Aurelia

15. Obelia colony
Medusa buds
tentacles
Colony:
Gonangium
Structure: (reproductive)
Perisac
(dead Colony:
material) Hyrdranth
(feeding)
Molecule:
catin
Coenosarc
(living)

16. Hydra
nematocysts

17. Hydra
budding
tentacles
bud
Basal disc (foot) mouth
hypostome

18. Hydra
• Phylum:
– cnidarians
• class:
– hydrozoa Gastrovascular
cavity
gastrodermis
epidermis Mesoglea layer

19. Planaria w.m
aka (scientific name): dugesia
Eye spots
Class:
turbellaria pharynx

20. epidermis
Planaria c.s
pharynx
Circular
muscles
Longitudinal
muscles
Parenchyma
gastrodermis layer
Gastrovascular cavity Buccal cavity Nerve chord

21. Anterior portion of Clonorchis
mouth
Oral sucker
pharynx
esophogas
Intestinal
Secum (?)

22. Mid section of Clonorchris
Sturcture hiding
under uterus:
Ventral sucker
Yolk gland
uterus
Intestinal secum

23. Posterior portion of Clonorchris
ovary
Yolk gland
testies

24. Clonorchis w.m
common name: human liver fluke
mouth
Gastrovascular cavity
uterus
Yolk glands
testies
ovaries
Excretory pore

25. Clonorchis eggs

26. Fasciola hepatica
class: Trematoda
Oral sucker
Ventral sucker
testies Uterus w/eggs
Yolk glands

27. • Organism:
– Fasciola hepatica
• stage/life:
– Cercaria
• *goes to vegetation and
comes back as
metacercaria

28. • Organism:
• Fasciola hepatica
• stage/life/structure:
– miracidium
• *this is what comes out
of the egg, goes into
snail

29. Fasciola hepatica
(redia)

30. Fasciola hepatica
Cercaria

31. Fasciola hepatica
(metacercaria)

32. • Scistosoma cercaria
• Species: scistosoma
• Head has digestive
enzymes to go into
human
• Branched tail help it to
swim

33. Schistosoma w.m
female and male
Gender: male
Gynecophoric
canal
Ventral sucker
Oral
sucker
Gender: female

34. Schistosoma w.m
female and male

35. Schistosoma ova
spike
spike

36. Taenia scolex
structure: scolex
proglottids
suckers

37. Mature proglottids
testies Genital pore
ovary
Yolk gland

38. Gravid ploglottids
*filled with eggs

39. Organism: Dipylidium caninum
Rostellum
hooks
(identified by elevation)
suckers

40. Organism: Dipylidium caninum
Gential pores (2)
testies
ovaries

41. Organism: Dipylidium caninum
sperm
Genital pore
ovaries

42. Organism: Echinococcus granulosus
Hydatid cyst

43. Organism: Echinococcus granulosus
*Organism: Echinococcus
granulosus is smallest
tapeworm [3 segments]
3 segments:
scolex
geminated zone
mature proglottids

44. Diphylobothrium latum ova

45. • Organism:
– Diphylobothrium latum scolex
• Disease:
– pernicious anemia
(megaloblastic anemia):
vitamin B12 deficiency

46. Organism:
Tania solium
Class:
Cestoda
(tapeworm)
Structure:
Cystercercus
Disease:
Cerebral cysticercosis