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Information about Classification6

Published on October 12, 2007

Author: Freedom


Kingdom Animalia:  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 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 Slide3:  Classification of Animals Invertebrates (without backbone) Animals Vertebrates (with backbone) Backbone/Vertebral Column:  Backbone/Vertebral Column Invertebrates:  Invertebrates Invertebrates:  Invertebrates The major groups of invertebrates are: Coelenterates/Cnidarians Flatworms Roundworms Ringed worms Arthropods Molluscs Echinoderms Cnidarians (Coelenterates):  Cnidarians (Coelenterates) Cnidarians:  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 Slide9:  Anemone Bubble Coral Hydra Slide10:  Jellyfish Flatworms:  Flatworms Flatworms:  Flatworms They have a long and flattened body Some are human parasites, which obtain nutrients from the human body Examples: tapeworm, liverfluke and planarian Slide13:  Tapeworm Planarian Liverfluke Roundworms:  Roundworms Roundworms:  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 Slide16:  Hookworm Ascaris Ringed Worms:  Ringed Worms Ringed Worms:  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 Slide19:  Chaetae Slide20:  Earthworm Leech Arthropods:  Arthropods Arthropods:  Arthropods They are protected by a hard exoskeleton They have jointed legs 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 4 Groups of Arthropods:  4 Groups of Arthropods Crustaceans Arachnids Myriapods Insects Crustaceans:  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 Slide25:  Lobster Crab Woodlouse Shrimp Slide26:  Water Flea Arachnids:  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 Slide28:  Spider Mite Scorpion Myriapods:  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) Slide30:  Centipede Millipede Insects:  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 compound eyes 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 Slide32:  Grasshopper Cocoon Mosquito Butterfly Molluscs:  Molluscs Molluscs:  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 Slide35:  Clam Snail Octopus Squid Echinoderms:  Echinoderms Echinoderms:  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 Slide38:  Sea Urchin Starfish Sea Cucumber Vertebrates:  Vertebrates Vertebrates:  Vertebrates The major groups of vertebrates are: Fish Amphibian Reptile Bird Mammal Fish:  Fish Fish:  Fish They have a moist skin covered with scales Slide43:  Fish scales – for protection Fish:  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 Fish:  Fish They lay eggs in water Slide46:  Fish eggs Fish:  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 Slide48:  Eel Goldfish Angel Fish Shark Sea Horse Amphibians:  Amphibians Amphibians:  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 Amphibians:  Amphibians They have two pairs of limbs with five digits each in the adult stage for movement They lay eggs in water They are poikilotherms Examples: frog, toad and salamander Slide53:  Frog Toad Salamander Reptiles:  Reptiles Reptiles:  Reptiles They have a dry, hard skin covered with scales Many live on land They have lungs for gas exchange They lay eggs enclosed in a hard shell on land They are poikilotherms Examples: lizard, snake, tortoise and crocodile Slide56:  Lizard Snake Tortoise Crocodile Slide57:  Dinosaurs – The Terrible Lizards Brachiosaurus Tyrannosaurus Birds:  Birds Birds:  Birds Their skin is covered with feathers They have two pairs of limbs: the forelimbs are modified to form a pair of wings for flying Most of the birds can fly but some cannot, such as penguins and ostriches They have no teeth. Their jaws are pointed and form a beak They have lungs for gas exchange Birds:  Birds They lay eggs enclosed in a hard shell on land The parents look after their young They maintain a constant body temperature, i.e. they are homoiotherms Examples: swallow, penguin, owl, duck, ostrich, robin and pigeon Slide61:  Owl Bird Eggs Duck Slide62:  Anteater Platypus Kangaroo Koala Bear Slide63:  Classification of Vertebrates Vertebrates Reptiles Fish Amphibians Lungs Feathers Cannot control their own body temperature Can control their own body temperature Beaks Mammary glands Scales Fins Gills Eggs Slimy skins, no scales 4 limbs Gills (Larvae) Lungs (Adult) Eggs Shelled- eggs Lungs 4 limbs Dry scales Birds 2 limbs + 2 wings Lungs Shelled- eggs Mammals Hairs 4 limbs Born alive What bird is the biggest in the world???:  What bird is the biggest in the world??? OSTRICHES!!!:  OSTRICHES!!! The ostrich is the biggest bird in the world. It can weigh up to 300 lbs!! Ostriches are rapid runners – they can attain a speed of about 65 km/hour. Ostriches also lay the biggest eggs among the birds. An ostrich egg is about 3.3 pounds and is the size of a baby’s head. FYI, one ostrich egg can make an omelet for 10 people!!!!! Mammals:  Mammals Mammals:  Mammals They have hair on their skin They have lungs for gas exchange Their young develop inside the mother’s body and are born alive After birth, the young are fed by milk from the mother’s mammary glands The parents look after their young Mammals:  Mammals They have highly developed brains They are homoiotherms and have a well-developed system for regulating the body temperature Examples: giraffe, dog, lion, dolphin, kangaroo, panda, cat, wolf and human Primitive Mammals:  Primitive Mammals They lay eggs instead of giving birth to the young alive Some of them carry their eggs in pockets/pouches in the abdomen When the young are hatched from the egg, they are fed by milk produced in the mother’s mammary glands Some pouched mammals do not lay eggs, but their young are born in a very immature state and need to be carried inside the mother’s pouch immediately after birth for further development They are found mainly in Australia

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