Invertebrates

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  1. LIVING THINGS CLASSIFICATION FIVE KINGDOMS 2. ANIMAL KINGDOM CLASSIFICATION 3. ANIMAL KINGDOM CLASSIFICATION INVERTEBRATES: without an internal bony skeleton…
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  • 1. LIVING THINGS CLASSIFICATION FIVE KINGDOMS
  • 2. ANIMAL KINGDOM CLASSIFICATION
  • 3. ANIMAL KINGDOM CLASSIFICATION INVERTEBRATES: without an internal bony skeleton •Sponges •Cnidarians. •Molluscs. •Annelids. •Arthropods. •Echinoderms.
  • 4. ANIMAL KINGDOM CLASSIFICATION VERTEBRATES: with an internal bony skeleton They belong to phylum chordata ASCIDIAS: Chordates but not vertebrates
  • 5. ANIMAL KINGDOM CLASSIFICATION Vertebrates characteristics: •Skeleton with spinal column. •Digestive system. •Excretory system. •Sexual reproduction. •Nervous system with brain and spinal chord.
  • 6. SPONGES SPONGES characteristics: •They live attached to the ground. •Their body is covered with pores. •They feed filtering water. Water goesout throught osculum.
  • 7. CNIDARIANS Characteristics: •Digestive cavity with a single opening (mouth- anus). •Tentacles to catch preys. Gastrovascular cavity Mouth-anus Tentacles
  • 8. CNIDARIANS Reproduction: Sometimes they reproduce asexually BUDDING
  • 9. CNIDARIANS Reproduction: Some species have alternating reproduction: alternate a sexual phase with an asexual phase.
  • 10. FLAT WORMS Characteristics •Bodies are FLAT •Head with sensory organs. •Some of them are saprophytes but others are parasites.
  • 11. NEMATODES Characteristics •Bodies are CILINDRICAL •Head with sensory organs. •Some of them are saprophytes but others are parasites.
  • 12. ANNELIDS Characteristics •Bodies are long and cylindrical. •Bodies divided in segments (metameres). •They breath through the skin. (cutaneous respiration). •Some of them have distinct sexes but other are hermaphrodites (sexual reproduction) Leeches Earthworms
  • 13. ANNELIDS
  • 14. MOLLUSCS Characteristics •External layer called mantle. Inside they have the visceral mass with organs. •Internal or external shell. •Muscular foot. •Radula: a tonge with teeth for biting and chewing.
  • 15. MOLLUSCS Types ● Gastropods. ● Cepahalopods. ● Bivalves.
  • 16. ARTHROPODS Characteristics ● Exoskeleton. ● Jointed limbs.
  • 17. ARTHROPODS Characteristics ● Body divided in head, thorax and abdomen. ● Head with well developed sensory organs. ● Head appendices adapted to different types of feeding. HEAD THORAX ABDOMEN
  • 18. ARTHROPODS Characteristics ● To grow they have to undergo a process of moult or shedding. ● They breath by a tracheal system.
  • 19. ARTHROPODS TYPES: Myriapods ● Head and long body divided in segments. CENTIPEDE HEAD with sensory organs Segmented body with jointed limbs MILLIPEDE
  • 20. ARTHROPODS TYPES: ARCHNIDS ● Cephalothorax and abdomen. CHELICERAE TO FEED 4 pairs of legs.
  • 21. ARTHROPODS TYPES: INSECTS ● Head, thorax and abdomen. HEAD THORAX ABDOMEN 3 pairs of legs
  • 22. ECHINODERMS CHARACTERISTICS ● PENTARADIAL SYMMETRY. ● .AMBULACRAL SYSTEM: ○ Locomotion. ○ Food and waste transportation(circulatory system. ○ Respiration.
  • 23. ECHINODERMS CHARACTERISTICS ● .AMBULACRAL SYSTEM: ○ Locomotion. ○ Food and waste transportation(circulatory system. ○ Respiration.
  • 24. ECHINODERMS CHARACTERISTICS ● INTERNAL SKELETON OF SPICULES MADE OF MINERALS
  • 25. ECHINODERMS TYPES ● .ECHINOIDS. ● ASTEROIDS. ● HOLOTHURIANS.
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