Locomotion in Animals

Tick TWO types of muscles on the walls of the earthworm's body

• Vertical muscle

• Circular muscle

• Longitudinal muscle

• Horizontal muscle

The diagram shows the movement of an earthworm. What happens to the body of the earthworm when the longitudinal muscles contract and circular muscles relax?

• The segments of the body will shorten and thicken

• The segment of the body will become longer and thinner

The ribs protect your...

• heart

• neck

• liver

• head

Who has more bones: an adult or a baby?

• baby
• adult
• both have the same
• neither have bones

What is a major difference between a hydrostatic skeleton and an endoskeleton?

• A hydrostatic skeleton is located inside the body and the endoskeleton outside.

• A hydrostatic skeleton is found in worms and an endoskeleton in invertebrates.

• An endoskeleton is located inside of the bodies of vertebrates and are composed of bone, while hydrostatic skeletons are fluid filled skeletons.

• Both ( option 1 and 2)

The image shows a joint found at the elbow. What is the type of joint present between the humerus and ulna?

• Ball and socket

• Fixed

• Hinge

• Pivot

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.

• (i) and (iii)

• (ii) and (iv)

• (i) and (iv)

• (ii) and (iii)

The image shows how the muscles help in the movement of the arm. Based on the image, what will be the length of the muscles during bending?

• Both bicep and triceps relax

• Both bicep and triceps contracts

• The bicep contracts while triceps relax

• The bicep relaxes while triceps contracts

Muscles work in pairs. They contract and relax simultaneously. How does this help an individual?

• It assists in the formation of the bones.

• It prevents any injury to the internal organs.

• It allows the movement of bones at the joints.

• It helps in the absorption of nutrients in the body.

How does the structure of the skeleton system support the body?

• It protects the outer skin of the body from any injury.

• It provides a framework that gives shape to the body.

• It provides the site for storing all the nutrients in the body.

• It allows free movement of all the bones during locomotion.