Class 6 Science - Chapter Body Movements NCERT Solutions | Answer the following: (a) What is a bal
Answer the following:
(a) What is a ball and socket joint?
(b) Which of the skull bones are movable?
(c) Why can our elbow not move backwards?
- Ball and socket joint: It is the type of joint; one bone is like a ball and other one is like a socket, and all is fixed into the socket. This type of joint is called ball and socket joint which is found in shoulders. Such types of joints make movements easy or we can say movements occurs in all directions.
- Mandible: It is the only skull bone which can move. It is present in the lower jaw which is movable.
- Our elbow cannot move in the backward direction because in elbow, hinge joint is present which allows the movement of elbow only in one direction.
More Questions From Class 6 Science - Chapter Body Movements
- Q:-
Indicate true (T) and false (F) 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:-
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 ______________________ joint.
(d) The contraction of the _____________ pulls the bones during movement. - Q:-
Match the items in Column I with one or more items of Column II.
Column I Column II
Upper jaw have fins on the body
Fish has an outer skeleton
Ribs can fly in the air
Snail is an immovable joint
Cockroach protect the heart
shows very slow movement
have a streamlined body
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What is a habitat?
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