•INTRODUCTION

•MIGRATION

•HIBERNATION AND AESTIVATION

•MIMICRY

•CAMOUFLAGE

•WARNING COLOURATION

•ADAPTATION OF WATER SCARCITY

IN ANIMALS

•ADAPTATION TO COLD

•BIBLOGRAPHY

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Every animal has adaptations, such as sense

organs and teeth, that enable it to find and use

food. Some use a wide variety of foods; others

specialize. Features such as camouflage and

protective shells enable them to cope with

predators.

•MIGRATION

•HIBERNATION AND AESTIVATION

•CAMOUFLAGE

•MIMICRY

•WARNING COLOURATION

•ADAPTATION OF WATER SCARCITY IN ANIMALS

•ADAPTATION TO COLD

1. MIGRATION :-

Migration usually occurs before and after breeding

seasons. During a breeding season, migratory

animals are subjected to seasonal changes in

environment and undergo physiological and

anatomical changes.

Collared Lemming Locust Locusts in Flight

HIBERNATION AND AESTIVATION:-

The animal goes into a very deep sleep, and while it is

asleep the metabolic rate slows down greatly and the core

body temperature is substantially lowered.

Any mammal that remains inactive for many weeks with a

body temperature lower than normal may be said to be in

hibernation

Ground Squirrel Pocket Gopher Gopher Tortoise

MIMICRY:-

Mimicry, physical or behavioural resemblance of one

species to another to benefit itself or in effect, sometimes

both species. By mimicking the colour bands and buzzing

sounds of stinging bees

Snake MimicryViceroy Mimicry

CAMOUFLAGE:-

Camouflage , any evolved resemblance of an organism to

its physical background causing it to be overlooked by

potential predators or prey. Camouflage, or crypsis,

commonly involves adaptations of size, shape, colour

patterning and behaviour and is widespread in the animal

kingdom, but less so in plants.

Camouflage

Coloration in Flatfish Praying MantisSnowshoe Hare in Summer

and Winter

WARNING COLOURATION:-

DEVELOPMENT OF COLOURS IS CALLED WARNING

COLOURATION. THEY CAN EASILY ESCAPE FROM

PREDATORS. THEY HAVE SOME TOXINS ALSO

Burrowing Frog

ADAPTATION OF WATER SCARCITY IN ANIMALS:

THIS ANIMALS CONSERVE WATER. THEY WILL

STORE WATER IN TISSUES, RELEASE SOLID URINE,

SWEAT PORES ARE ABSENT ETC.,

CapybaraDromedary

ADAPTATION TO COLD:-

COLD HARDENS THE SKIN OF THE ANIMALS AND THEY

RELEASE ICE NUCLEATING PROTEIN INDUCES THE

FORMATION OF ICE ON THE EXTERNAL SURFACE OF THE

BODY AND CELLULAR FLUID AT LOW TEMPERATURE.

Goby Polar Bear Northern Pike

•NCERT TEXT BOOKS CLASS VIII AND XII

•BRITANNICA 2001

•MICROSOFT ENCARTA, 2001

•JONIOR SCIENCE REFRESHES, NOVEMBER

2003

•INTERNET

GUIDED BY

K.G.MALLIKARJUN

VICE PRINCIPAL

JAWAHAR NAVODAYA VIDYALAYA

LEPAKSHI,

ANANTHAPUR

PREPARED BY

IX CLASS BOYS

JNV, ANANTHAPUR