NCRT 6th Class (CBSE) Science: Form and Movement in Animals

Question: Give two examples of ball and socket joint.

Answer:

1.  Joint of upper arm and shoulder.
2.  Joint of thigh and the hip.

Question: Give an example of pivotal joint.

Answer: The joint of skull with backbone.

Question: Give two examples of hinge joints.

Answer:

1.  Joints in fingers
2.  Joints in knee

Question: Give an example of fixed joint.

Answer: Joint of cranium skull.

Question: Give an example of gliding joint.

Answer: The joint in backbone.

Question: What is skeleton?

Answer: The framework of bones in our body is called skeleton.

Question: What are ribs?

Answer: The bones of the chest are called ribs.

Question: What is rib cage?

Answer: Ribs are joined with backbone to form a box. This box is called rib cage.

Question: What are shoulder bones?

Answer: The shoulder bones are formed by the collar bone and the shoulder blade. It connects the
upper part of the chest and bones of the arm.

Question: What are pelvic bones?

Answer: The bones which enclose the body part below the stomach are called pelvic bones.

Question: What are cartilages?

Answer: Some additional parts of the skeleton which are not as hard as bones and are elastic in nature and can be bent are called cartilages, e.g. cartilage of ear.

Question: Name the three components of skeleton.

Answer: Skeleton is made up of many bones, joints and cartilage.

Question: Name the parts of the body which help in movement.

Answer: Contraction and relaxation of muscles and bones and joints help in movement.

Question: Name two animals which move without bones.

Answer:

1. Earthworm
2.  Snail

Question: Give an example of animal which can walk, climb and fly in the air.

Answer: Cockroaches.

Question: Name the organ in cockroach which helps in walking.

Answer: The three pairs of legs in cockroach help in walking.

Question: Which part of the cockroach help in flying?

Answer: There are two pairs of wings attached to the breast which help them in flying.

Question: Name a bird which can swim in water.

Answer: Duck.

Question: What do you mean by streamlined?

Answer: If the body tapers at both the ends then such, shape of the body is said to be streamlined.

Question: How does the snake move?

Answer: Snakes have a long backbone and many thin muscles which help in the movement. The snake’s body curves into many loops. Each loop of the snake gives it a forward push by pressing against the ground.

Question: What do you mean by fractured bone?

Answer: Fractured bone means broken bone.

Question: Why are fractured bones plastered?

Answer: Plaster keeps broken bones at their right place so that they grow and join properly.

Question: Name organs that are protected by the rib cage?

Answer: Heart and Lungs.