Answer:
Ribs are joined with backbone to form a box. This box is called rib cage.
Body Movements
Q 1.
Name organs that are protected by the rib cage?
Q 2.
Which part of the cockroach help in flying?
Q 4.
Write two ways by which we may know the shape of human skeleton.
Q 5.
Give two examples of ball and socket joint.
Q 6.
Name a bird which can swim in water.
Q 7.
What are joints? Write the names of various types of joints.
Q 8.
Name the various types of joint.
Q 9.
Give two examples of hinge joints.
Q 10.
Name the parts of the body which help in movement.
Q 11.
If there are no joints then will it be possible to move?
Q 12.
Name a bird which can swim in water.
Q 13.
Why are fractured bones plastered?
Q 15.
Name two animals which move without bones.
Q 16.
What is cavity in bone?
Q 17.
What do you mean by streamlined?
Q 18.
If you tie a scale with your arm, are you able to bend your elbow?
Q 19.
What are pelvic bones?
Q 20.
Name the organ in cockroach which helps in walking.
Q 22.
Name the places where two parts of the body are seen to be joined together.
Q 23.
Write the differences between bones and cartilage.
Q 24.
Give an example of fixed joint.
Q 25.
Can we bend our body at every part?
Q 26.
What do you mean by movement?
Q 27.
What do you mean by fractured bone?
Q 28.
At which part does the arm rotate?
Q 29.
Answer the following questions:
(a) What is a ball and socket joint?
(b) Which of the skull bones are movable?
(c) Why can our elbow not move backwards?
Q 31.
What are cartilages?
Q 32.
Indicate ‘true' and false' among the following sentences:
(a) The movement and locomotion of all animals is exactly the same.
(b) The cartilages are harder than bones.
(c) The finger bones do not have joints.
(d) The fore arm has two bones.
(e) Cockroaches have an outer skeleton.
Q 33.
Name the three components of skeleton.
Q 34.
How many types of joints are there?
Q 35.
Name three animals that have streamlined body.
Q 36.
How does the snake move?
Q 37.
Why do we need two muscles together to move a bone?
Q 38.
How is a bird's body adapted for flying?
Q 39.
If there are no joints then will it be possible to move?
Q 40.
Give an example of pivotal joint.
Q 41.
Give an example of gliding joint.
Q 42.
Give an example of animal which can walk, climb and fly in the air.
Q 43.
Many people suffer from a problem called arthritis. Explain its connection with movement.
Q 44.
What are shoulder bones?
Q 45.
How does the snail move?
Q 46.
Name the three components of skeleton.
Q 47.
Fill in the blanks:
(a) Joints of the bones help in the_____________ of the body.
(b) A combination of bones and cartilages forms the_______________ of the body.
(c) The bones at the elbow are joined by a______________
(d) The contraction of the____________ pulls the bones during
Q 48.
How do the muscles work?
Q 49.
What is skeleton? Draw a diagram to show the human skeleton.
Q 50.
How does the earthworm move?
