Animal Kingdom Invertebrate Phylum. Porifera The sponge Symmetry? Germ layers? Body cavity? ...

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Animal Kingdom Invertebrate Phylum

Transcript of Animal Kingdom Invertebrate Phylum. Porifera The sponge Symmetry? Germ layers? Body cavity? ...

Page 1: Animal Kingdom Invertebrate Phylum. Porifera The sponge  Symmetry?  Germ layers?  Body cavity?  Level of organization?  Cool characteristics: Choanocytes.

Animal KingdomInvertebrate Phylum

Page 2: Animal Kingdom Invertebrate Phylum. Porifera The sponge  Symmetry?  Germ layers?  Body cavity?  Level of organization?  Cool characteristics: Choanocytes.

Porifera

Page 3: Animal Kingdom Invertebrate Phylum. Porifera The sponge  Symmetry?  Germ layers?  Body cavity?  Level of organization?  Cool characteristics: Choanocytes.

The sponge Symmetry? Germ layers? Body cavity? Level of organization? Cool characteristics:

Choanocytes Amoeboid cells Spicules/spongin Mostly Asexual reproduction sessile

Page 4: Animal Kingdom Invertebrate Phylum. Porifera The sponge  Symmetry?  Germ layers?  Body cavity?  Level of organization?  Cool characteristics: Choanocytes.

Cnidarians

Page 5: Animal Kingdom Invertebrate Phylum. Porifera The sponge  Symmetry?  Germ layers?  Body cavity?  Level of organization?  Cool characteristics: Choanocytes.

anthozoa, hydrozoa, scyphozoan Symmetry? Germ layers? Body cavity? Level of organization? Cool characteristics

Mesoglea Cnidocytes, nematocysts Gastrovascular system 2 body forms: polyp and medusa

Page 6: Animal Kingdom Invertebrate Phylum. Porifera The sponge  Symmetry?  Germ layers?  Body cavity?  Level of organization?  Cool characteristics: Choanocytes.

Nemertea and Platyhelminthes

Page 7: Animal Kingdom Invertebrate Phylum. Porifera The sponge  Symmetry?  Germ layers?  Body cavity?  Level of organization?  Cool characteristics: Choanocytes.

Ribbon worms and flatworms Symmetry? Germ layers? Body cavity? Level of organization? Cool characteristics

Proboscis apparatus Free living or parasitic flatworms Cephalization Gas exchange through diffusion

Page 8: Animal Kingdom Invertebrate Phylum. Porifera The sponge  Symmetry?  Germ layers?  Body cavity?  Level of organization?  Cool characteristics: Choanocytes.

Nematoda and Rotifera

Page 9: Animal Kingdom Invertebrate Phylum. Porifera The sponge  Symmetry?  Germ layers?  Body cavity?  Level of organization?  Cool characteristics: Choanocytes.

Roundworms and rotifers Symmetry? Germ layers? Body cavity? Level of organization? Cool characteristics

parasitic roundworms – Ascaris, Trichinella, filarial worms – dogs (heartworm) humans (elephantiasis)

Crown of cilia – corona, locomotion

Page 10: Animal Kingdom Invertebrate Phylum. Porifera The sponge  Symmetry?  Germ layers?  Body cavity?  Level of organization?  Cool characteristics: Choanocytes.
Page 11: Animal Kingdom Invertebrate Phylum. Porifera The sponge  Symmetry?  Germ layers?  Body cavity?  Level of organization?  Cool characteristics: Choanocytes.

Protostomes Deuterostomes Mulluscs, annelids,

arthropods Spiral and determinate

cleavage Blastopore is mouth Coelom forms by a

splitting of the mesoderm

Echinoderms and chordates

Radial and indeterminate

Blastopore is anus Coelom forms by

outpocketing of primitive gut

Page 12: Animal Kingdom Invertebrate Phylum. Porifera The sponge  Symmetry?  Germ layers?  Body cavity?  Level of organization?  Cool characteristics: Choanocytes.

Benefits of coelom Freer body movements – outer wall

independent of gut Ample space allows for growth of organs Fluid protects organs from damage Storage for reproductive, digestive wastes

prior to being expelled Hydrostatic skeleton – muscle contraction

against fluid in cavity

Page 13: Animal Kingdom Invertebrate Phylum. Porifera The sponge  Symmetry?  Germ layers?  Body cavity?  Level of organization?  Cool characteristics: Choanocytes.

Mollusca

Page 14: Animal Kingdom Invertebrate Phylum. Porifera The sponge  Symmetry?  Germ layers?  Body cavity?  Level of organization?  Cool characteristics: Choanocytes.

mulluscs Symmetry? Germ layers? Body cavity? Level of organization? Cool characteristics

3 part body plan (mantle, foot, visceral mass) Open circulatory system in most 3 main classes

Bivalves Gastropoda cephalopoda

Page 15: Animal Kingdom Invertebrate Phylum. Porifera The sponge  Symmetry?  Germ layers?  Body cavity?  Level of organization?  Cool characteristics: Choanocytes.

Annelids

Page 16: Animal Kingdom Invertebrate Phylum. Porifera The sponge  Symmetry?  Germ layers?  Body cavity?  Level of organization?  Cool characteristics: Choanocytes.

Segmented worms Symmetry? Germ layers? Body cavity? Level of organization? Cool characteristics

Marine worms, earth worms and leeches Setae – bristles that anchor the worm hermaphroditic

Page 17: Animal Kingdom Invertebrate Phylum. Porifera The sponge  Symmetry?  Germ layers?  Body cavity?  Level of organization?  Cool characteristics: Choanocytes.

Arthropods

Page 18: Animal Kingdom Invertebrate Phylum. Porifera The sponge  Symmetry?  Germ layers?  Body cavity?  Level of organization?  Cool characteristics: Choanocytes.

Jointed appendages Symmetry? Germ layers? Body cavity? Level of organization? Cool characteristics

Exoskeleton of chitin, molt Segmentation is modified for specialization Well developed nervous system Variety of respiratory organs metamorphosis

Page 19: Animal Kingdom Invertebrate Phylum. Porifera The sponge  Symmetry?  Germ layers?  Body cavity?  Level of organization?  Cool characteristics: Choanocytes.

Further classification of arthropods3 subphyla of arthropoda1. Crustacea – crayfish, shrimp and craps

Most aquatic, hard exoskeleton, compound eyes and 5 pair of appendages.

2. Uniramia – centipedes, millipedes and insects Most live on land and breathe through trachea, thorax and abdomen

have only 1 pair of appendages

3. Chelicerata – horseshoe crabs, spiders ticks and mites Live in all environments, first pair of appendages are pinchers

(chelicerae), 2nd pair pedipalps (feeding) Fused head and thorax, cephalothorax

Page 20: Animal Kingdom Invertebrate Phylum. Porifera The sponge  Symmetry?  Germ layers?  Body cavity?  Level of organization?  Cool characteristics: Choanocytes.

Echinoderms

Page 21: Animal Kingdom Invertebrate Phylum. Porifera The sponge  Symmetry?  Germ layers?  Body cavity?  Level of organization?  Cool characteristics: Choanocytes.

Spiny skin Symmetry? Germ layers? Body cavity? Level of organization? Cool characteristics

Primarily bottom dwellers Larvae are free swimming filter feeders with bilateral

symmetry Endoskeleton made of spiny calcium rich plates called

ossicles Water vascular system - locomotion