Discussion
Which of the following represents correct matching set ?
| (a) helps in the movement of body by contraction and relaxation. | (i) Cartilage |
| (b) Hard structure which forms the skeleton | (ii) Muscles |
| (c) Part of skeleton which can be bent | (iii) Rib-cage |
| (d) Joins the chest bone and back bone together to form an enclosure | (iv) Bones |
Answer: B
The correct matching is (a) (ii), (b) (iv), (c) (i), (d) (iii).
- (a) Muscles move the body by contracting and relaxing.
- (b) Bones are the hard structures that form the skeleton.
- (c) Cartilage is the part of the skeleton that can be bent; it is softer and more flexible than bone, as in the ear and the nose.
- (d) The rib-cage joins the chest bone (sternum) and the backbone to enclose the heart and lungs.
Every other option pairs at least one description with the wrong structure: the first, for instance, calls cartilage the part that moves the body and gives the rib-cage the job of forming the whole skeleton.
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