1. Invertebrate Animals Honors Biology

2. Objectives Describe characteristics common to invertebrate animals Describe the characteristics of major animal invertebrate phyla Identify on sight members of major animal invertebrate phyla Define animal, chordate, vertebrate, invertebrate

3. Characteristics of animals Multicellular Eukaryotic Heterotrophic Sexual reproduction No cell wall Motile at some stage Rapid response to environment –Nerve cells –Muscle cells –Both

4. Taxonomy Viruses Domains:Kingdoms:Sub-groups: BacteriaX ArchaeaX EukaryaProtists Fungi PlantsNon-vascular Vascular Seedless Gymnosperms Angiosperms AnimalsInvertebrates Vertebrates

5. Classification 27 Phyla – discuss major ones Grouped as: –Invertebrates: NO backbone/vertebral column –Vertebrates: backbone/vertebral column –What is a backbone and what is a chordate? Backbone: supportative bone structure Chordate: has nerve chord We will cover: –6 phyla 5 invertebrate phyla 8 classes within the chordate phyla

6. Classification DomainKingdomPhylum EukaryaAnimalia Sponges Cnidarians Flatworms Roundworms Segmented worms Molluscs Arthropods Echinoderms Chordates

7. Classification: Invertebrate (no backbone) DomainKingdomPhylum EukaryaAnimalia Sponges Cnidarians Flatworms Roundworms Segmented worms Molluscs Arthropods Echinoderms Chordates

8. Classification DomainKingdomPhylum EukaryaAnimalia Sponges Cnidarians Flatworms Roundworms Segmented worms Molluscs Arthropods Echinoderms Chordates

9. Sponges (b) Sac-like body Cellular level of organization 2 cell layers Filter feeder Rudimentary nervous system CAN regenerate Sponges (Porifera)

10. Classification DomainKingdomPhylum EukaryaAnimalia Sponges Cnidarians Flatworms Roundworms Segmented worms Molluscs Arthropods Echinoderms Chordates

11. Cnidaria Marine Radial symmetry Two cell layers with differentiation; one body opening Alternating body forms (polyp & medusa) Stinging cells

14. Classification DomainKingdomPhylum EukaryaAnimalia Sponges Cnidarians Flatworms Roundworms Segmented worms Molluscs Arthropods Echinoderms Chordates

15. Flatworms (Platyhelminthes) 3 cell layers Acoelomate Many parasitic and/or pathogenic One way digestive system

17. Classification DomainKingdomPhylum EukaryaAnimalia Sponges Cnidarians Flatworms Roundworms Segmented worms Molluscs Arthropods Echinoderms Chordates

18. Roundworms (Nematoda) Moist environments Most free-living; many parasitic Pseudocoelomate Tube-like digestive system Well-developed senses in free-living

21. Classification DomainKingdomPhylum EukaryaAnimalia Sponges Cnidarians Flatworms Roundworms Segmented worms Molluscs Arthropods Echinoderms Chordates

22. Annelids Segmented Hydrostatic skeleton Brain + solid nerve cord Three main types –Marine Worms 1 Clam worms (predators) 2 Fan worms (prey) –Earthworms –Leeches

23. Annelids

24. Classification DomainKingdomPhylum EukaryaAnimalia Sponges Cnidarians Flatworms Roundworms Segmented worms Molluscs Arthropods Echinoderms Chordates

25. Molluscs Soft bodied with protective shells Aquatic/Marine Often mucus feeders Body parts –Visceral mass –Foot –Mantle (secretes shell)

26. Mollusks

27. Classification DomainKingdomPhylum EukaryaAnimalia Sponges Cnidarians Flatworms Roundworms Segmented worms Molluscs Arthropods Echinoderms Chordates

28. Arthropods 3 types: –1 Crustaceans –2 Insects –3 Arachnids Major characteristics: –1 Exoskeleton (chitin) Protection Attachment for muscles Movement Prevent drying out –2 Segmented bodies w/ jointed appendages –3 Well developed brains and nervous systems

29. Arthropods: Crustaceans

30. Arthropods: Insects

31. Arthropods: Arachnids

32. Classification DomainKingdomPhylum EukaryaAnimalia Sponges Cnidarians Flatworms Roundworms Segmented worms Molluscs Arthropods Echinoderms Chordates

33. Echinoderms Marine animals Internal skeleton Spiny skin Radially symmetrical

34. Echinoderms

35. Classification DomainKingdomPhylum EukaryaAnimalia Sponges Segmented worms Molluscs Arthropods Echinoderms Chordates

36. Phylum Chordata

37. Objectives Name and describe characteristics of 9 chordate classes Give an example of each chordate class Describe three groups of mammals Describe the Primate order Describe the Hominidae family Give the taxonomy of humans

38. Chordates 1 notochord 2 hollow nerve cord in the back 3 pharyngeal pouches (embryonic structures) 4 tail

39. Classification DomainKingdomPhylumClass EukaryaAnimalia Sponges Segmented worms Molluscs Arthropods Echinoderms ChordatesLancets Tunicates Jawless Fish Cartilaginous Fish Bony Fish Amphibians Reptiles Birds Mammals

40. Lancets (invertebrate)

41. Tunicates (invertebrate)

42. Classification DomainKingdomPhylumClass EukaryaAnimalia Sponges Segmented worms Molluscs Arthropods Echinoderms ChordatesLancets Tunicates Jawless Fish Cartilaginous Fish Vertebrates Bony Fish Amphibians Reptiles Birds Mammals