sci 8 eng l1 adaptation
TRANSCRIPT
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8-VIIADAPTATION OF
ORGANISMSPresented by ,
M.A I.C.P. Wijayaratna
Wp/Ke Kirillawala M.V.
K. Suriyapperuma
Wp/Ke Sangamiththa M.V.
Grade- 8 Science
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Objectives:
Explain the meaning of the wordAdaptation
Explain the Structural and behavioraladaptations of animals
Describe the adaptations of man to theenvironment
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Observe the pictures
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Home Write down the answers for the
following questions in your book.
Which variety of moths would be more
prominent at a glance ?
Which variety of the two moths would
catch the eye of a predator easily?
Give reason for your answers to the above
questions.
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Modification of animals to suitthe background in which they
live is called the
Adaptation
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Adaptations are found in variousaspects, such as in color, shape,
size, structure and life activities.
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A.Adaptations for protection.
1. Animals attempt to match the background and blend withit in colour, markings on the body, shape, size so that the
enemy can not detect them easily. This is called theCamouflage.
2. Some animals have poison fangs, poison hair, poisonglands and stings.
3. Some have protective coverings.
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Home Following animals show the abovefeatures. Fill in the table by using the
pictures given below.
Animal Adaptations
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HomeFill in the table given below by using the words, Gecko,Tortoise, Cuttle Fish, Moth or Butterfly larvae, Rat.Monkey.
Adaptation Animal
1.Emits an inky liquid making it impossible to see .
2. Can break the tail away .
3. Has a prehensile tail .
4. Withdraws fleshy parts into the cell .
5 Has a large spot resembling a pair of eyes .
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HomeB. Adaptation for feeding
Different animals have different foodhabits and they have adaptations to gettheir foods easily.
Birds have beaks.
Animals have teeth.
Insects have mouth parts.
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HomeObserve the following birds and make a table toshow the shape of the beakand foods they eat.
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Adaptations of beaks
Food Type Shape of the beak
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Animals use their teeth to eat foods. Use the followingpictures to fill in the table.
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HomeAnimal Foods
they eatAdaptationsof teeth
OtherAdaptations
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HomeMouth Parts of some insects adjusted for feeding habit
Mosquito
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HomeHouse Fly
Spider Butterfly
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HomeMake a table to show the food habits and adaptations inmouth parts of
Butterfly, House fly, Mosquito and Spider.
Insect Food habit Adaptations in mouth parts
House fly
Mosquito
Spider
Butter fly
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Adaptations for locomotion
Methods of locomotion which dependon the living environment.
Method of Locomotion
Living Environment
1. Walking, Running,Hopping, Gliding
on Land
2. Swimming in water
3. Flying In air
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Observe the following pictures.
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HomeBy observing the above pictures fill in the followingtable.
Animals LivingEnvironment
Type ofLocomotion
Adaptations
Ad t ti f M
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HomeAdaptations of Man,
1. Man is considered to be a highly developed animal living onthe earth.
2. Man has legs adapted for living and locomotion on land.
3. He has lungs adapted for air respiration.
4. He has teeth suitably formed by chewing his food.
5. He has a highly developed brain.
6. He can grasp objects by using the fingers.
Importance of the adaptations
1. It is important for the survival of living beings.
2. It is important for the diversity of living beings.
S
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HomeSummary
1.The special adjustment in organisms which are useful to them inovercoming the various obstacles in the environment and
continue their survivals are called adaptations.2. Some adjustments in animals enable them to escape from their
enemies.
3. The mouth parts and other organs of animals are adapted
according to their feeding methods.
4. The methods of locomotion and appendages used forlocomotion of animals are suited for the environment in whichthey live.
5. Man is an animal adapted for life on land.
6. Man has devised various means to overcome environmentalobstacles using his brain and the special grasping abilities of his
fingers.