NCERT Solutions for Class 6 Science Chapter 8 Question Answers of Body Movement updated for new session in Hindi and English Medium.

Class 6 Science Chapter 8 NCERT Solutions

Question 1. 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.

Answer:

    • (a) Joints of the bones help in the movement of the body.
    • (b) A combination of bones and cartilages forms the skeleton of the body.
    • (c) The bones at the elbow are joined by a hinge joint.
    • (d) The contraction of the muscle pulls the bones during movement.

Question 2. 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.

Answer:
(a) The movement and locomotion of all animals is exactly the same. (F)
(b) The cartilages are harder than bones. (F)
(c) The finger bones do not have joints. (F)
(d) The fore arm has two bones. (T)
(e) Cockroaches have an outer skeleton. (T)

Question 3. Match the items in Column I with one or more items of Column II.
Column IColumn II
Upper jawhave fins on the body
Fishhas an outer skeleton
Ribscan fly in the air
Snailis an immovable joint
Cockroachprotect the heart
shows very slow movement
have a streamlined body
Answer:
Column IColumn II
Upper jawis an immovable joint
Fishhave fins on the body, have a streamlined body
Ribsprotect the heart
Snailshows very slow movement
Cockroach can fly in the air, has an outer skeleton
Question 4. 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?

Answer:
(a) A ball and socket joint is a moveable joint. It has a rounded end of one bone fit into the cavity (hollow space) of the other bone. It allows movement in all directions. Example: shoulder joints.
(b) Only the lower jaw in skull bones is movable.
(c) Elbow joint is an example of hinge joint which allows only back and forth movements. Therefore, we cannot move our elbow backwards.

Download App for Class 6