1 / 107

ANIMALS

ANIMALS. Animals. Definition : multicellular, heterotrophic, eukaryotes - no cell walls : support - connective tissue - prevalent mode of nutrition = ingestion - unique tissues: nervous and muscle. TWO Major Branches of Animals. Parazoa : structurally simplistic: sponges

brad
Download Presentation

ANIMALS

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. ANIMALS

  2. Animals Definition: multicellular, heterotrophic, eukaryotes - no cell walls: support - connective tissue - prevalent mode of nutrition = ingestion - unique tissues: nervous and muscle

  3. TWO Major Branches of Animals Parazoa: structurally simplistic: sponges Eumetazoa: develop true tissues Two Types: - Radiata - radial symmetry - Bilateria - bilateral symmetry - cephalization: head region - cluster of sensory organs

  4. Radial & Bilateral Symmetry

  5. Parazoa Sponges: Porifera - pore bearers - simple body plan - sessile as adults - filter feeders - pores

  6. Parazoa - Porifera Sponge Filtration

  7. Parazoa - Porifera

  8. Spicules Spongin Silica (glass)

  9. Glass Sponge

  10. PHYLUM CNIDARIA: jelly fish, sea anemones, coral - aquatic Structure: Epidermis Gastrovascular Cavity - single opening - mouth and anus Cnidoblasts - nematocysts - stinging cells Types: venom, barb, tangling

  11. Cnidaria

  12. Cnidaria

  13. Cnidaria

  14. Cnidocyte and Nematocyst

  15. Youtube - Cnidaria • Sea Anemone • Nematocyst Firing • Jellyfish Swimming • Jellyfish Lake • Giant Jellies

  16. Triploblastic: Bilateria • Acoelomates, psuedocoelomates and coelomates

  17. Development of Tissue Layers Ectoderm - develops into outer coverings and nervous system Endoderm - lines digestive tube (archenteron) - associated digestive organs - liver, lungs Mesoderm - third germ (tissue) layer - only in eumetazoa - forms muscles and other organs between endoderm and ectoderm

  18. Coelom Types

  19. Purpose of the Coelom - protection: cushion from shock - space for growth - space for movement - organs can shift - movement: earthworms

  20. Acoelomates Phylum PLATYHELMINTHES: unsegmented flat worms EX: Planaria, Fluke, Tapeworm Ecological: food chain, parasites

  21. Acoelomates • Unsegmented Flatworms • Planaria – Turbellaria Planaria Regeneration Marine Flat Worm

  22. Trematoda - Fluke

  23. Cestoidia - Tapeworm

  24. Pseudocoelomates NEMATODA: unsegmented roundworms - complete digestive tract - use pseudocoelom to move - hydrostatic pressure - also as circulatory system Ecological Roles: - decomposers - aerate soil - pests - parasites - Trichinosis

  25. Nematode • Unsegmented Roundworms

  26. Filiariasis/Elephantiasis

  27. Coelomates: Protostomes MOLLUSCA: snails, slugs, shellfish, octopuses, squid Three basic structures muscular foot -movement visceral mass - internal organs mantle - secretes shell - may or may not have shell: external or internal Feeding: Filter Feeding: shell fish - incurrent and excurrent siphons Radula - rasping - tongue-like organ Beak - octopus and squid

  28. Mollusca

  29. Gastropoda - stomach footed - snails and slugs - aquatic or terrestrial - cephalization Bivalvia - clams, oysters, scallops - no cephalization - two shells - foot - digging or anchoring Cephalopoda - head footed - squid and octopuses - - foot - head and divided into tentacles - closed circulatory system - all blood contained in veins and arteries - complex brains - learn and behave

  30. Feeding Methods - Radula Slug Feedinghttp://youtube.com/watch?v=KB3scGais-4&feature=related Snail Eatinghttp://youtube.com/watch?v=F-SBGWAUbxA

  31. Feeding Methods - Beak

  32. Cephalopod Videos Octopus and Coconut Giant Octopus Giant Octopus II Octopus and Diver Octopus vs. Shark Nova Science Now

  33. ANNELLIDA: segmented round worms - coelom separated into segments by Septum

  34. Annelids - Oligocheta

  35. Earthworm Locomotion – Hydrostatic Compression

  36. Annelids – Hirudinae - Leech

  37. Polychaeta

  38. ARTHROPODA: General Characteristics - Segmented bodies - Exoskeletons of chitin - Jointed Appendages - Gas Exchange: Gills - aquatic Tracheal tubes Book lungs - Ecological: food chain pollination pests parasites

  39. Classification Arachnida: spiders, scorpions, ticks, mites 4 pairs of walking legs lack antenna one or two body segments Spiders: chelicerae - pedipalps webs Respiration: Book Lungs No Antenna

  40. Arachnids - Spiders

  41. Spider Videos • Jumping Spiders: http://www.youtube.com/watch?v=UC_gXrC6oyshttp://youtube.com/watch?v=zXhdr0TpOwY • Trapdoor spiderhttp://youtube.com/watch?v=ZjIr2lwG5Ug • Web Spiders http://www.youtube.com/watch?v=1JlLLpaCkI4http://www.youtube.com/watch?v=EuTPY12kLS4

  42. Myriapods: jawlike feeding appendages - mandibles antenna Diplopoda: two pairs of legs per body segment = millipede - vegetarians - decaying vegetation Chilopoda: one pair of legs per body segment = centipedes - carnivorous

  43. Myriapods • Diplopoda • http://youtube.com/watch?v=kkxS-6wHWOk&feature=related • Chilopoda

  44. Insects: Entomology - most abundant class Body Plan 3 segments: Head: antenna and mandibles Thorax: legs and wings - only flying arthropods Abdomen

More Related