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Kingdom Animalia Characteristics

Kingdom Animalia Characteristics. Heterotrophs Eukaryotic Multicellular No cell wall, no chloroplasts Motile Sense Organs. 9 phyla we will mention. Porifera—sponges Cnidaria—jellyfish, sea anemones, coral Platyhelminthes—flatworms Nematoda—roundworms Annelida—earthworms

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Kingdom Animalia Characteristics

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  1. Kingdom AnimaliaCharacteristics • Heterotrophs • Eukaryotic • Multicellular • No cell wall, no chloroplasts • Motile • Sense Organs

  2. 9 phyla we will mention • Porifera—sponges • Cnidaria—jellyfish, sea anemones, coral • Platyhelminthes—flatworms • Nematoda—roundworms • Annelida—earthworms • Mollusca—shelled animals • Arthropoda—insects, spiders • Echinodermata—spiny-skinned • Chordata—vertebrates (and others)

  3. Phylum Porifera(sponges) • Asymmetrical • Pores—filter feeders • Not motile (sessile) • Provide habitat for other animals • Eaten by starfish and some fish • Most primitive animal

  4. Phylum Cnidaria(jellyfish, sea anemones, coral) • Digestive cavity called a coelenteron • Radial symmetry • Predators-feed on crustaceans • Corals provide important habitat for fish • Coral used for decoration and threatened by pollution • All have stinging cells

  5. Phylum Platyhelminthes(planarians, tapeworms, flukes) • Bilateral symmetry • Cephalization- head and brain • Acoelomate- no body cavity • Incomplete digestive system (one opening) • Some are parasites in digestive tract • In early 1900’s models ate them to be thin—YUK!

  6. Phylum Nematoda(roundworms) • Also called nematodes • Complete digestive system-separate mouth and anus (2 openings) • Pseudocoelomate • Decomposers, predators (bacteria, inverts) • Eaten by insects, mice • Beneficial to garden by eating insects

  7. Phylum Annelida(segmented worms) • i.e. earthworms, leeches • True coelom • Sensitive to vibrations on ground-rain • Prey for robins, shrews, jays, snakes • Leeches have cornified knobs to break skin, anticoagulant and anesthetic

  8. Phylum Mollusca(shelled…sometimes) • i.e. snails, slugs, clams, mussels, scallops, oysters, octopus and squid • Variety in form • Giant squid = sea serpent • Introduction of garden snails

  9. Phylum Arthropoda(jointed legged animals) • i.e. insects, spiders and scorpions, shellfish (crustaceans), centipedes (1 pr legs per segment), millipedes (2 pr) • Exoskeleton • Metamorphosis • Pheromones • Molting

  10. Phylum Echinodermata(spiny-skinned) • i.e. sea stars = starfish, sea urchins • Water vascular system • Tube feet • Important predators

  11. Phylum Chordata(includes the vertebrates) • i.e. fish, sharks, amphibians, reptiles, birds, mammals • Notochord, nerve cord, gill slits, tail

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