A. Tick the correct answer:-

1. C 2. D 3. A 4. D 5. B 

B. Differentiate between the following:-

1. A tendon connects muscle to bones.

       Ligaments connect bone to bone.

2. The skeleton present on the body surface is exoskeleton.

   The hard skeletal Framework inside the body is called endoskeleton.

3. Locomotion means displaced from one place to another.

   Movement is the change in position of only a part of the body.

4. Cell is structural and functional system of body.

  Tissue is group of cells.

C. Give one word answer for each of the following:-

1. Jaw 2. 206 3. Steamlined 4. Lung 5. Skeleton.

D. Match column A with column B:-

1. Amoeba 2. Muscular 3. Human beings 4. Fly.

E. Give two examples for each of the following:-

1. Blood, respiratory 2. Snake, earthworm 3. Hairs, horns.

F. Give reasons for each of the following:-

1. In ligament tissue connect bone to bone.

2. Because muscles always pull and muscle is present in hinge joint.

3. To protect inner part.

G. Write true or false:-

1. False 2. True 3. True 4. False.

H. Circle the odd one out:-

1. Excretion 2. Exoskeleton 3. Wrist 4. Fish.

I. Fill in the blanks:-

1. 22 2. Femur 3. Joint 4. Ligament 5. Endoskeleton.

J. Short answer questions:-

1. Eye,Nose,Lung,Heart etc.

2.Eye,Nose,Lung,Heart etc.

3. In joint bones are present close to each other.

   Ligament connect bone to bone.

4. Tail, Dorsal fin,Pelvic fin.

5. Bone marrow is present inside bone which a protein.

6. Joint is where, two bones meet.

7. Ball and socket joint-In  this joint, the ball of one bone moves in the socket of the other bone.e.g hips and shoulder.

8. Tissue is combination of cells.e.g ligament, hand.

K. Long answers questions:-

1. Function of skeletal system-

It gives definite shape to the body.

It supports the body.

It also keeps the other organs in proper position.

2. The backbone is called the spine. It is made up of 33 small bones. This are called vertebrae.The spine forms the the central supporting rod for the skeleton. It contains bone marrow and through which blood pass. The bhati bra can move over each other. This allows you to bend and twist your back.

3. Birds fly with help of their wings. Birds pr moves their wing up and down there by upward thrust allows bird to fly.

4. Structure of earthworm contains circular muscles and longitudinal muscles.

        Movement of backward and forward movement of longitudinal muscles make earthworm to move.

    There are bristle-like projections called setal that help to get a grip on the ground.

5. Joints are-

 Hinge joint- elbow/ finger 

Ball and socket joint- hips and shoulder

Pivot joint-between skull and fisst to vertebra of backbone 

Gliding joint-bones of the ankle.

6. When muscles contract they help to move the bones together.