Question

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Answer 1

Answer :

Question 1. Tick the correct option -

Solution of que. 1_____

a) Ball and Socket joint

b) Hinge joint

c) Knee

d) Floating

Question 2. Match the items given in column A with those of columns B:

Solution of que. 2____

1) Pivotal Joint - between head and neck

2) Outer Skeleton - snail

3) Hinge joint - Elbow joint

4) Cartilage - Upper part of the ear

5) Birds forelimbs - Wings

6) Hollow bones - Birds

Question 3 . Who am I ?

Solution of que.3 ____

a) Skeleton

b) Ribs/ Ribcage

c) Spine

d) Femur

Question 4. Indentify the following parts of the skeleton and write their functions-

1. Ribcage...

The rib cage protects the delicate internal organs like heart, liver and lungs. The rib cage also take part in our breathing movement.

2. Ball and Socket joint....

Ball and Socket joint allows wider movement than any other kind of joints . This Joint allows maximum movement in all directions.

3. Skull.....

Skull provides structure of the face and cavity and it also protects our brain from injury.

Question 5. Answer the following questions -

Solution of que. 5____

a)____

i) Ram is very sensitive towards the nature.

ii) Earthworm plays an important role in agriculture as they help loosen up the aerated soil which helps in respiration of the roots of the plants making them penetrate deeper and grow well. This also helps making the soil fertile as earthworm brings nutrients to the surface.

b) .... If our backbone had only one long bone instead of many vertebrae we would not be able to bend .