Introduction
Before trying to attempt to answer the NCERT exercise questions, you should have a thorough understanding of class 6 Science chapter 5 i.e. ‘Body Movements’.
If you haven’t understood the chapter yet, then worry not you can go through it easily and develop a crystal clear understanding of various concepts from our notes whose link has been provided below.
NCERT Exercise Questions & Answers
Que. 1 Fill in the blanks:
(a) Joints of the bones help in the ——————— of the body.
(b) A combination of bones and cartilage forms the————— of the body body.
(c) The bones at the elbow are joined by a ___________ joint.
(d) The contraction of the ________ pulls the bones during movement.
Ans. 1 (a) Joints of the bones help in the movement of the body.
(b) A combination of bones and cartilage 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.
Que. 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 cartilage is harder than bones. ( )
(c) The finger bones do not have joints. ( )
(d) The forearm has two bones. ( )
(e) Cockroaches have an outer skeleton. ( )
Ans. 2 (a) The movement and locomotion of all animals are exactly the same. (False)
(b) The cartilage is harder than bones. (False)
(c) The finger bones do not have joints. (False)
(d) The forearm has two bones. (True. i.e. ulna and radius are the two bones present in our forearm)
(e) Cockroaches have an outer skeleton. (True)
Que. 3 Match the items in Column I with one or more items in Column II.
| Column I | Column II |
| 1. Upper jaw | a) has fins on the body |
| 2. Fish | b) has an outer skeleton |
| 3. Ribs | c) can fly in the air |
| 4. A snail | d) is an immovable joint |
| 5. Cockroach | e) protect the heart |
| f) shows very slow movement | |
| g) has a streamlined body |
Ans. 3 The match of Column I with Column II is:
| Column I | Column II |
| 1. Upper jaw | d) is an immovable joint |
| 2. Fish | a) have fins on the body, g) has a streamlined body |
| 3. Ribs | e) protect the heart |
| 4. Snail | b) has an outer skeleton, f) shows a very slow movement |
| 5. Cockroach | b) has an outer skeleton, c) can fly in the air |
Que. 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?
Ans. 4 (a) A Ball and socket joint is a joint that is formed when the rounded end of one bone fits into the socket-like cavity of another bone. Such a joint is present in our shoulder.
(b) In the skull, only the lower jaw bone is movable.
(c) Our elbows can’t move backwards because our elbows have hinge joints in them and hinge joint allows movement in one direction only.
References & Credits
- Class 6 Science NCERT Textbook.
- Image by freepik
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