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Kingdom Animalia

Kingdom Animalia. Kingdom Animalia. They are complex, multicellular organisms Their cells have a nucleus and organelles Their cells do not have a cell wall Most of them can move about freely from place to place

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Kingdom Animalia

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  1. KingdomAnimalia

  2. Kingdom Animalia • They are complex, multicellular organisms • Their cells have a nucleus and organelles • Their cells do not have a cell wall • Most of them can move about freely from place to place • They lack chlorophyll and obtain their food by feeding on the body parts of other organisms • They have specialized systems for detecting the environment, movement and coordinating body functions

  3. Classification of Animals Animals Vertebrates (with backbone) Invertebrates (without backbone)

  4. Backbone/Vertebral Column

  5. Invertebrates

  6. Invertebrates The major groups of invertebrates are: • Coelenterates/Cnidarians • Flatworms • Roundworms • Ringed worms • Arthropods • Molluscs • Echinoderms

  7. Cnidarians(Coelenterates)

  8. Cnidarians • They have a soft, sac-like body with one opening forming the mouth and anus • They have tentacles with stinging cells which can paralyze organisms • They live in fresh or sea water • Examples: jellyfish, coral, sea anemone and Hydra

  9. Anemone Bubble Coral Hydra

  10. Jellyfish

  11. Flatworms

  12. Flatworms • They have a long and flattened body • Some are human parasites, which obtain nutrients from the human body • Examples: tapeworm, liverfluke and planarian

  13. Planarian Tapeworm Liverfluke

  14. Roundworms

  15. Roundworms • They have a small, cylindrical body with two pointed ends • Their body is long and unsegmented • Some of them are free living and some are parasites in plants and animals • Examples: Ascaris and hookworm

  16. Hookworm Ascaris

  17. Ringed Worms

  18. Ringed Worms • They have an elongated body with segments • They have chaetae (singular: chaeta), i.e. bristle-like hair, for movement • They live in soil or water • Examples: earthworm and leech

  19. Chaetae

  20. Earthworm Leech

  21. Arthropods

  22. Arthropods • They are protected by a hard exoskeleton • They have jointedlegs • Their body is divided into distinct regions made up of segments • The number of types of arthropods in the world are more than the number of types of other animals put together

  23. 4 Groups of Arthropods • Crustaceans • Arachnids • Myriapods • Insects

  24. Crustaceans • They have five or more pairs of jointed legs and two pairs of antennae (singular: antenna) • They are mainly aquatic • They use gills for gas exchange • Examples: shrimp, crab, water flea, lobster and woodlouse

  25. Lobster Crab Woodlouse Shrimp

  26. Water Flea

  27. Arachnids • They have four pairs of jointed legs • They have no antennae • They mainly live on land • Their body is divided into two parts: head and abdomen • Examples: spider, scorpion and mite

  28. Spider Scorpion Mite

  29. Myriapods • They have a long and segmented body • They have many pairs of legs • They are terrestrial animals • Examples: centipede (one pair of legs on each segment) and millipede (two pairs of legs on each segment)

  30. Millipede Centipede

  31. Insects • They have clearly defined head, thorax and abdomen • They have three pairs of jointed legs and two pairs of wings • They have one pair of antennae • They have one pair of compoundeyes • They are the most numerous animals in the world • Some insects undergo metamorphosis during their development from larva to adult stage • Examples: butterfly, grasshopper, bee, beetle, dragonfly, cockroach and mosquito

  32. Grasshopper Cocoon Butterfly Mosquito

  33. Molluscs

  34. Molluscs • They have a soft and unsegmented body, usually with a hard shell protecting the body • Most of them have a muscular foot • Most of them live in water • Examples: snail, clam, squid and octopus

  35. Snail Clam Octopus Squid

  36. Echinoderms

  37. Echinoderms • They have a radially symmetrical body (i.e. having a symmetrical arrangement of radiating parts about a central point) • They have a tough skin which may be covered with spines • They live in sea water • Examples: starfish, sea urchin and sea cucumber

  38. Starfish Sea Urchin Sea Cucumber

  39. Vertebrates

  40. Vertebrates The major groups of vertebrates are: • Fish • Amphibian • Reptile • Bird • Mammal

  41. Fish

  42. Fish • They have a moist skin covered with scales

  43. Fish scales –for protection

  44. Fish • They have a moist skin covered with scales • They are aquatic vertebrates • They use gills for gas exchange • They have a streamlined body, which reduces water resistance during swimming • They have fins for swimming and maintaining balance in water

  45. Fish • They lay eggs in water

  46. Fish eggs

  47. Fish • They lay eggs in water • Their body temperature changes with the environment, i.e. they are poikilotherms • Examples: shark, eel, goldfish and sea horse

  48. Eel Sea Horse Goldfish Shark Angel Fish

  49. Amphibians

  50. Amphibians • They have a “naked” and moist skin • Tadpoles, the young stage of amphibians, are fish-like and live in water. The adults are partly aquatic and partly terrestrial • Tadpoles have gills for gas exchange whereas the adults may use the skin, mouth and lungs for gas exchange

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