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 options below.

(a)

(i) and (iii)

(b)

(ii) and (iv)

(c)

(i) and (iv)

(d)

(i) and (iv)

Which one of the following organisms lack muscles and skeleton for movement?

(a)

Dog

(b)

Snail

(c)

Earth worm

(d)

Human being

__________ joints are immovable.

(a)

Shoulder and arm

(b)

Knee and joint

(c)

Upper jaw and skull

(d)

Lower jaw and upper jaw

Why do underwater divers wear fin-like flippers on their feet ?

(a)

To swim easily in water

(b)

To look like a fish.

(c)

To walk on water surface

(d)

To walk over the bottom of the sea (sea bed).

Which one of the following categories of vertebrae are correctly numbered.

(a)

Cervical-7

(b)

Thoracic-10

(c)

Lumbar - 4

(d)

Sacral - 4

Why our backbone is slightly moveable?

What is ligament?

Define Muscle

Differentiate tendons and ligament

Differentiate between the following.
a) Movement and Locomotion.
b) Endoskeleton and Exoskleton
c) Pectoral and Pelvic girdle
d) Ball and socket Joint and Hinge Joint
e) Voluntary and Involuntary muscle.

What are antagonistic muscles? Give one example.

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

What are the functions of skeleton in human body?

What is a streamlined body? How does it help in the movement of animals that fly or swim in water?

Write a short note on different types of muscles.