1. REVIEW

3. ALL ANIMALS
• -Heterotrophs
• -Eukaryotic
• -Belong to Kingdom Animalia or Metazoa
• -Motile (at a certain part of their life)

4. DEVELOPMENT
• First thing that develops is a digestive tract.

5. DEVELOPMENT
• Layers form

7. DEVELOPMENT
• And so on

8. OVOVIVIPAROUS VS OVIPAROUS VS
VIVIPAROUS

9. ANIMIALIA

10. ANIMIALIA
• Porifera (Sponges)—Multi celular, no body
symmetry, no coelom
• Cnidaria (jellyfish, corals, anemones)-- radially
symmetrical, diploblastic hydrostatic skeleton, no
coelom,
• Ctenophora radially symmetrical, diploblastic,
hydrostatic skeleton, no coelom, nerve net

11. • Porifera (Sponges)—Multi
celular, no body symmetry,
no coelom
Cnidaria (jellyfish, corals, anemones)—
multi cellular, radially symmetrical,
diploblastic hydrostatic skeleton, no
coelom, Never net
Ctenophora radially symmetrical,
diploblastic, hydrostatic skeleton, no
coelom, nerve net

12. WHAT IS THE DIFFERENCE BETWEEN
CNIDARIA AND CTENOPHORA?
• • Cnidarians are highly diversified in terms of the number of species compared to
ctenophores.
• • The body size range is higher among ctenophores than in cnidarians.
• • The majority of cnidarians live in the ocean while a very little number of species could be
found in freshwater, whereas all the ctenophores have been recorded only from the
saltwater environments.
• • Cnidarians are radially symmetrical while ctenophores are either radial or biradial in their
body symmetry.
• • The alteration of generations is present among cnidarians but not in ctenophores.
• • Cnidarians have Cnidocytes to disable the prey while ctenophores have colloblasts to
capture prey.
• • Bioluminescence is more common among ctenophores than in cnidarians.
• • Digestive tract is complete in ctenophores but not in cnidarians.
• • Ctenophores have a comb plate but never in cnidarians.

13. ANIMIALIA
• Acoelomorpha--- are a disputed phylum, Bilateral ,
No coelm

14. BILATERAL PROTOSOMES

15. LOPHOTROCHOZOA
• (Grow incrementally and exhibit spiral cell
cleavage)
• All Bilateral
• Show radial cleavage
• Have psedocoelms

16. LOPHOTROCHOZOA(R,P,A,M)
• Rotifera– pseudocoelomate, Show cephilization
• Platyhelminthes—(endoparasitic tapeworms, ectoparasitic flukes) NO
body cavity,, parasitic
• Annelida ---(Segmented Worms (leeches, earthworms)) lineages
include suspension, deposit, and mass feeders Oligochaetes are all
deposit feeders that live in soil
• Mollusca---consists of a manteln, viseral mass, and muscular
foot
• Bivalves (clams and mussels)
• Gastropods (slugs and snails)
• Chitons (mollusks with plated dorsal shells)
• Cephalopods (squids and octopuses)

17. Rotifera– pseudocoelomate, bilateral
symmetry Show cephilization
Platyhelminthes—(endoparasitic
tapeworms, ectoparasitic flukes) NO
body cavity, bilateral symmetry,
parasitic
Annelida ---(Segmented Worms
(leeches, earthworms)) lineages
include suspension, deposit, and mass
feeders Oligochaetes are all deposit
feeders that live in soil

18. DEFINITIONS
• acoelomate:
• animal:
• benthic:
• Bilateral symmetry:
• Cambrian explosion:
• cephalization:
• coelom:

19. DEFINITIONS
• Deposit feeder:
• Detritivore:
• deuterostomes:
• diploblast:
• ecdysozoans:
• ectoderm:
• ectoparasite:

20. DEFINITIONS
• endoderm:
• endoparasite:
• epithelium:
• Filter feeder:
• ganglion:
• Germ layer:
• Hydrostatic skeleton:

21. DEFINITIONS
• invertebrates:
• lophotrochozoans:
• Mass feeder:
• mesoderm:
• Nerve net:
• oviparous:
• ovoviviparous:

22. DEFINITIONS
• polyp:
• protostomes:
• pseudocoelomate:
• Radial symmetry:
• Segmentation:
• triploblast:
• vertebrates:
• viviparous: