ANIMALS

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1 Sajani Senevirathne Sajani Senevirathne Sajani Senevirathne Classification of Animals (vertebrates) Classification of Animals (vertebrates)

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CONTENT Classification of animals. The main Characteristics of vertebrates. Vertebrates. MAMMALS (MAMMLIA) FISH (PISCES) BIRDS (AVES) AMPHIBIANS (AMPHIBIA) REPTILES (REPTILIA) 2

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4 ANIMALS CAN BE CLASSIFIED IN TO TWO GROUPS . ANIMALS WITH A BACK BONE ARE CALLED VERTIBRATES . - elephants ,frog ,crow ,crocodile ALL THE OTHER ANIMALS WITH OUT A BACK BONE ARE CALLED NON VERTIBRATES - slug , butterfly , mosquito

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6 SAJANI PRESENTS The main Characteristics of vertebrates

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Vertebral column 7

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The nerve cord forming a brain 8

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Availability of bony skull covering the brain 9

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10 VERTEBRATES CAN BE CLASSIFIED UNDER 5 CATEGORIES MAMMLS (MAMMLIA) FISH (PISCES) BIRDS (AVES) AMPHIBIANS (AMPHIBIA) REPTILES (REPTILIA)

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Mammals ( Mammalia) 13 Animals that are endothermic having a body covered with hair , bearing external ears and young is fed on mothers milk are called mammals which belong to the class of mammalians.

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Mammals are most advanced and mentally developed group of animals 14

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MAMMALS LIVE IN ALL THREE 15 AIR LAND AQUATIC ENVIRONMENTS.

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16 All mammals give birth to live young . Body covered with hair . Young fed on mothers milk .

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Fish (Pisces) Animals with streamlined body , gills, fins bony skeleton and livening entirely in water are fishes which belongs to the class Pisces. 18

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20 They are aquatic animals . The mode of movement in water is swimming .

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They possess a streamlined body . 21 Fins are available for swimming .

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22 The gills are normally the respiratory organs . They have a Bony skeleton .

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Birds (aves) 24 Animals that are endothermic , having a body covered with feathers, where four limbs are modified into wings, capable of living in land and or water are birds which belong to class aves.

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26 The mode of movement is flying. They are adapted to an air atmosphere and live on trees .

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27 Posses a beak . No teeth in the mouth. Front limbs of birds are adapted as wings.

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29 Amphibians (Amphibia) Animals with moist skin ,which bear four limbs and live in both water and land are called amphibians.

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30 They are born out of eggs Most of them have four legs

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32 They have the ability to swim in water and either crawl or hop on land They live both Aquatic and land environments

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Reptiles (Reptilia) 34 Animal with hard , dry skinned body and scales, which is sometimes covered with a shell and limbs either absent or where present four in number which live in water or land are called reptiles.

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36 They are animals that crawl. Most of them possess four legs.

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38 Hard and dry skinned body. Some time covered with a shell.

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Summarizing the presentation 40

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