Animals

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Animals

  1. 1. Animals
  2. 2. Vertebrates InvertebratesCharacteristics Characteristics• An internal skeleton • An external skeleton articulated o exoskeleton.• A spine or backbone • No bones or spines or that supports the body cranium• A cranium that • Legs, wings, simetric protects the brain body or antennaes• Legs, wings or finsThey are classified into They are classified into five gropus six groups
  3. 3. ClassificationVertebrates Invertebrat es1. Mammals 1. Arthropods2. Fish 2. Mollucs3. Amphibian 3. Worms 4. Echinoderms s 5. Cnidarians4. Reptiles 6. Sponges5. Birds
  4. 4. Mammals• Viviparous• Mother’s milk• Hair or fur• Four legs• Fins• Warm- blooded
  5. 5. Fish• Oviparous• Fins• Bony scales• Gills• Lateral line
  6. 6. Birds• Oviparous• Wings• Feathers• Constant body temperature• Beak• Lungs• Nests
  7. 7. Reptiles• Oviparous• Cold- blooded• Scales• Four legs or none• Limbs
  8. 8. Amphibians• Oviparous• Skin: moist and slimy• Four legs• Breathe through skin and lungs• Metamorphosis
  9. 9. Arthropods• Exoskeleton• Crustaceans : ten legs• Arachnids : eight legs• Myriapods : many legs and long body• Insects: six jointed legs
  10. 10. Molluscs• Moist body• Protected by a shell• In water• On land• Gastropods• Bivalves: two valves• Cephalopods: eigth to ten tentacles
  11. 11. Worms• Long body• No legs• In water• On land• By wriggling
  12. 12. Echinoderms• Radial simetry• Hard plates under their skin• Spines ( some of them)
  13. 13. Cnidarians• Jelly- like body• Radial simetry• Soft tentacles• One open mouth and anus
  14. 14. Sponges• The symplest animal• Irregular in shape• Holes on its body• In water

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