living organisms and their surroundings
DESCRIPTION
LIVING ORGANISMS AND THEIR SURROUNDINGS. CLASS VI. ORGANISM-LIVING CREATURE. LIVING ORGANISMS ARE FOUND EVERYWHERE ON EARTH. HABITAT. THE NATURAL LIVING PLACE OF AN ORGANISM IS ITS HABITAT. AN ORGANISM DEPENDS ON ITS HABITAT FOR FOOD, WATER, AIR, SHELTER etc. - PowerPoint PPT PresentationTRANSCRIPT
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LIVING ORGANISMS AND THEIR SURROUNDINGS
CLASS VI
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ORGANISM-LIVING CREATURE• LIVING ORGANISMS ARE
FOUND EVERYWHERE ON EARTH
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HABITAT• THE NATURAL LIVING PLACE OF AN
ORGANISM IS ITS HABITAT.• AN ORGANISM DEPENDS ON ITS
HABITAT FOR FOOD, WATER, AIR, SHELTER etc.
• SEVERAL KINDS OF ORGANISMS ARE FOUND IN A HABITAT.
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ADAPTATION
• THE PRESENCE OF SPECIAL FEATURES IN OR CERTAIN HABITS WHICH ENABLE A PLANT OR AN ANIMAL TO LIVE IN ITS SURROUNDINGS IS CALLED ITS ADAPTATION.
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I. TERRESTRIAL HABITAT
• IF THE HABITAT IS LAND, IT IS CALLED TERRESTRIAL HABITAT.• EXAMPLES-DESERT,FOREST,
GRASSLAND, MOUNTAINS etc.
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1.DESERT
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DESERT PLANTS
CACTUS AGAVE DATE PALM
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DESERT PLANTSADAPTATIONS OF DESERT PLANTS
• 1. LEAVES ARE ABSENT/ REDUCED OR MODIFIED INTO SPINES --TO REDUCE WATER LOSS BY TRANSPIRATION
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ADAPTATIONS OF DESERT PLANTS
• 2. STEM IS GREEN AND DOES PHOTOSYNTHESIS
• 3.STEM STORES WATER, SO IT IS THICK AND FLESHY
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• 4.DEEP ROOT SYSTEM TO COLLECT MAXIMUM WATER FROM DEEP SOIL
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• 5.THICK WAXY LAYER ON STEM PREVENTS WATER LOSS
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ADAPTATION IN DESERT ANIMALS
• 1.CAMEL HAS LONG LEGS TO KEEP THE BODY AWAY FROM HOT SAND.
• 2. IT STORES FOOD AS FAT IN ITS HUMP.
• 3. IT CAN STORE WATER IN ITS BODY.
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• 5. LONG EYELASHES • TO PREVENT SAND FROM • FALLING INTO THE EYES
4. HOOFS OF A CAMEL WELL SUITED FOR WALKING ON SAND
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SOME ANIMALS REMAIN IN BURROWS DURING THE DAY & COMES OUT DURING NIGHT
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DESERT ANIMALS IN BURROWS
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2.MOUNTAIN REGIONS
• 1.MOUNTAIN TREES GROW IN CONICAL PATTERN WITH SLOPPING BRANCHES – HELPS SNOW TO SLIDE DOWN.
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2. THEY HAVE NEEDLE SHAPED LEAVES-HELPS WATER AND SNOW TO SLIDE DOWN
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ANIMALS IN MOUNTAIN REGION• 1.A SNOW LEOPARD IS
WHITE IN COLOUR –CAN HIDE IN THE ENVIRONMENT.
• 2.THICK FUR –TO PROTECT FROM COLD
• 3.CLAWS TO PREVENT SLIPPING ON THE SURFACE OF SNOW
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MOUNTAIN GOAT
• 1.THICK WHITE FUR
• 2.STRONG HOOFS FOR RUNNING UP THE ROCKY SLOPES.
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YAK
• LONG THICH FUR OF YAK PROTECT IT FROM SEVERE
COLD IN THE WINTER
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3. GRASS LANDSLION
• 1.LIGHT BROWN COLOUR- HELPS TO HIDE IN GRASS
LAND• 2.LONG CLAWS WHICH
CAN BE WITHDRAWN INSIDE.
• 3.BOTH THE EYES INFRONT OF THE HEAD-GIVES CORRECT IDEA ABOUT THE LOCATION OF THE PREY
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DEER• 1. CAN RUN FASTER—TO
ESCAPE FROM THE PREDATORS.
• 2.STRONG TEETH –CHEWING HARD STEM.
• 3.LONG EARS –TO HEAR THE MOVEMENTS OF PREDATORS.
• 4. EYES AT THE SIDE OF HEAD ALLOWS TO LOOK IN ALL DIRECTIONS FOR DANGER
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PREDATOR & PREY• A PREDATOR EATS THE PREY.• THE HUNTER IS THE PREDATOR• THE ONE WHO IS HUNTED BY THE PREDATOR
IS THE PREY
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II.AQUATIC HABITAT - OCEAN
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AQUATIC ANIMALS• 1.STREAMLINED
[BOAT SHAPED] BODY.-FOR EASY MOVEMENT IN WATER
• 2.GILLS FOR RESPIRATION
• 3.BODY IS PROTECTED BY SCALES GILLS
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BLOW HOLES• DOLPHINS AND
WHALES HAVE NOSTRILS TO BREATHE AIR FROM ATMOSPHERECALLED BLOWHOLES
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PONDS AND LAKES
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WATER PLANTS• SOME HAVE ROOTS FIXED IN THE SOIL• G
LOTUS VALLISNARIA
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SOME ARE FLOATING
WATER HYACINTH
PISTIA
SALVINIA
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IN VALLISNARIA, THE RIBBON SHAPED LEAVES CAN BEND IN WATER TO PREVENT UPROOTING
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• STEM OF LOTUS IS HOLLOW ,LONG AND LIGHT.• LEAVES ARE DISC SHAPED.• LEAVES AND FLOWERS FLOAT ON WATER.• LEAVES HAVE WAXY COATING TO PREVENT
WATER STAGNATION
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LEAF STALK IS FILLED WITH AIR TO HELP FLOATING
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SOME ARE SUBMERGED-HYDRILLA PLANT
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FROGS
• CAN BREATHE IN WATER AND LAND.
• WEBBED FEET TO SWIM IN WATER.
• STRONG BACK LEG TO TAKE LONG LEAPS.
• STICKY TONGUE TO CATCH INSECTS
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CHARACTERISTICS OF LIVING THINGS• 1. ALL LIVING THINGS NEED FOOD . FOOD IS THE SOURCE OF ENERGY
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2.LIVING THINGS GROW
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3.LIVING THINGS RESPIREBOTH PLANS AND ANIMALS DO RESPIRATION.DURING RESPIRATION, OXYGEN IS USED AND CARBONDIOXIDE IS RELEASED.
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4.LIVING THING RESPOND TO STIMULI
• INSECTS LIKE COKROACH, MOVE AWAY FROM LIGHT.
• SOME INSECTS ARE ATTRACTED BY LIGHT.
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PLANTS TOO RESPOND TO LIGHT
• SOME FLOWERS LIKE WATER LILY BLOOMS AT NIGHT.
• LOTUS BLOOMS IN DAY LIGHT. LEAVES OF A TOUCH ME NOT PLANT DROOPS
WHEN TOUCHED.