Sci 8 Eng L1 Adaptation

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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.

Sci 8 Eng L1 Adaptation

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