REVIEW

ALL ANIMALS

• -Heterotrophs

• -Eukaryotic

• -Belong to Kingdom Animalia or Metazoa

• -Motile (at a certain part of their life)

DEVELOPMENT

• First thing that develops is a digestive tract.

DEVELOPMENT

• Layers form

DEVELOPMENT

• And so on

OVOVIVIPAROUS VS OVIPAROUS VSVIVIPAROUS

ANIMIALIA

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

• 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

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.

ANIMIALIA

• Acoelomorpha--- are a disputed phylum, Bilateral ,

No coelm

BILATERAL PROTOSOMES

LOPHOTROCHOZOA

• (Grow incrementally and exhibit spiral cell

cleavage)

• All Bilateral

• Show radial cleavage

• Have psedocoelms

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)

Rotifera– pseudocoelomate, bilateral

symmetry Show cephilization

Platyhelminthes—(endoparasitic

tapeworms, ectoparasitic flukes) NO

body cavity, bilateral symmetry,

parasiticAnnelida ---(Segmented Worms

(leeches, earthworms)) lineages

include suspension, deposit, and mass

feeders Oligochaetes are all deposit

feeders that live in soil

DEFINITIONS

• acoelomate:

• animal:

• benthic:

• Bilateral symmetry:

• Cambrian explosion:

• cephalization:

• coelom:

DEFINITIONS

• Deposit feeder:

• Detritivore:

• deuterostomes:

• diploblast:

• ecdysozoans:

• ectoderm:

• ectoparasite:

DEFINITIONS

• endoderm:

• endoparasite:

• epithelium:

• Filter feeder:

• ganglion:

• Germ layer:

• Hydrostatic skeleton:

DEFINITIONS

• invertebrates:

• lophotrochozoans:

• Mass feeder:

• mesoderm:

• Nerve net:

• oviparous:

• ovoviviparous:

DEFINITIONS

• polyp:

• protostomes:

• pseudocoelomate:

• Radial symmetry:

• Segmentation:

• triploblast:

• vertebrates:

• viviparous: