1.1 Organism and Their Classification
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Transcript of 1.1 Organism and Their Classification
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BIODIVERSITY
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What is BIODIVERSITY ?
• The wide variety of organisms on earth.
• ‘Bio’ = living things
• ‘Diversity’ = variety
• ‘BIODIVERSITY’ means variety of life
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Animals
VertebrateAmphibians
Fish
Birds
Mammals
Reptiles
Invertebrate
CLASSIFICATION OF ANIMALS
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AMPHIBIANS
Eg: Toad, Frog, Salamander
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AMPHIBIANS
• Cold blooded animals• Can live both on land and in water• Have external fertilisation• Young amphibians live in water
(breath through their gills)• Adult amphibians (breath with lungs
on the land and through skin when in water)
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FISH
Eg: Goldfish, Porcupine fish
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FISH
• Skins are covered with hard and slimy scales
• Have fins and tails (to swim)• Absorbed dissolved oxygen through
gills• Lay eggs that fertilised outside the
body• Cold blooded animals
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BIRDS
Eg: Pigeon, Parrot
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BIRDS
• Only animals with feathers• Have beaks and wings (not all can
fly)• Breath with their lungs• Warm blooded animals (body
temperature remains constant)• Internal fertilisation
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MAMMALS
Eg: Giraffe, Elephant, Rhinoceros
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MAMMALS
• Warm blooded animals
• Body cover with hair and fur
• Internal fertilisation
• Young feeds on milk from mother’s mammary glands
• Breath with their lungs
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REPTILES
Eg: Rattlesnake, Cobra, Phyton
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REPTILES
• Live on land
• Have hard dry scales (protection)
• Breath with their lungs
• Cold blooded animals
• Internal fertilisation