Which of the following parts of our body help us in movement?
(i) Bones
(ii) Skin
(iii) Muscles
(iv) Organs
Choose the correct answer from the option below.

1

(a)

(i) and (iii)

(b)

(ii) and (iv)

(c)

(i) and (iv)

(d)

(ii) and (iii)

Skeleton of human body is made up of

1

(a)

bones

(b)

cartilage

(c)

Both (a) and (b)

(d)

None of these

Fixed joints are found in

1

(a)

lower jaw

(b)

skull

(c)

hands

(d)

hip bone

Underwater divers wear fin-like flippers on their feet to

1

(a)

swim easily in water

(b)

look like a fish

(c)

walk on water surface

(d)

walk over the bottom of the sea (sea bed)

Which of the following organisms does not have both muscles and skeleton for movement?

1

(a)

Dog

(b)

Snail

(c)

Earthworm

(d)

Human being

Contraction of ___________ pulls the bone during movement.

1

(a)

muscles

Our skeleton is made of many ____________ and_______________ .

1

(a)

bones, cartilage

Backbone is made up of____________ bones.

1

(a)

many (33)

Ball and socket joint is present between the bones of ______________ and ___________of our body.

1

(a)

shoulder bone, upper arm bone

Hinge joint is present in __________________ .

1

(a)

elbow

Minute movable bristles in earthworm help in gripping on the ground.

1

(a) False

(b) True

The joint of the upper arm and shoulder blade is a hinge joint.

1

(a) True

(b) False

Palm consists of 5 long metacarpal bones.

1

(a) False

(b) True

The skull consists of the cranium and the facial bones.

1

(a) True

(b) False

The human skeletal system is made up of 206 bones.

1

(a) False

(b) True

Name the organs that are protected by the rib cage.

2

(a)

Cockroach can fly as well as walk. What help the cockroach to walk?

2

(a)

Comparing an earthworm and a snail, explain which of the two moves faster?

2

(a)

Define the term movement.

2

(a)

The hard and strong skull protects a delicate organ of our body. Name that organ

2

(a)

Can you imagine how does an earthworm fix parts of its body to the ground?

3

(a)

Plants do not move from one place to another. Do they show any other kind of movements? Which type of movements are shown by plants?

3

(a)

Explain, how do we bend our elbow.

3

(a)

We need two muscles together to move a bone.Why?

3

(a)

We are able to move a few parts of our body easily in various directions and some only in one direction. Why it is so?

3

(a)

How is the skeleton of a bird well-suited for flying?

5

(a)