Class 6 Science Solutions Chapter 5: Body Movement
Exercise Answers:
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.
Solution:
(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 muscles pulls the bones during movement.
2. Indicate true (T) and false (F) among the following sentences.
(a) The movement and locomotion of all animals are exactly the same. ( )
(b) The cartilages are harder than bones. ( )
(c) The finger bones do not have joints. ( )
(d) The forearm has two bones. ( )
(e) Cockroaches have an outer skeleton. ( )
Solution:
a) False
b) False
c) False
d) True
e) True
3. Match the items in Column I with one or more items of Column II.
Solution:
| 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 |
Solution:
| Column I | Column II |
| Upper jaw | Is an immovable joint |
| Fish | Have fins on the body, have a streamlined body |
| Ribs | Protect the heart |
| Snail | Has an outer skeleton andShows very slow movement |
| Cockroach | Has an outer skeleton andCan fly in the air |
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?
Solution:
a) When two bones meet, the rounded end of one bone fits into the cavity or hollow space of the other bone. This type of joint is called a ball and socket joint, which permits movement in every direction.
b) Lower jaw
c) The human elbow joint is comprised of hinge joints that restrict its movement to only back-and-forth motion, preventing movement in other directions.
Other, chapter solutions for class 6 science:
NCERT Solutions for Class 6 Science
- Chapter 1: Components of Food
- Chapter 2: Sorting Materials and Groups
- Chapter 3: Separation of Substances
- Chapter 4: Getting to Know Plants
- Chapter 5: Body Movement
- Chapter 6: The Living Organisms – Characteristics and Habitats
- Chapter 7: Motion and Measurement of Distances
- Chapter 8: Light, Shadows and Reflections
- Chapter 9: Electricity and Circuits
- Chapter 10: Fun with Magnets
- Chapter 11: Air Around Us
