CLASS 6
CHAPTER 8
BODY MOVEMENTS
Question1. Skeleton of human body is made up of
(a) bones
(b) cartilage
(c) both bones and cartilage
(d) None of these
Answer: (c) both bones and cartilage
Question2.Human skeleton comprises
(a) skull and backbone
(b) ribs and breast bone
(c) shoulder and hip bones
Answer: (d) All of these
Question3. Fixed joints are found in
(a) lower jaw
(b) skull
(c) hands
(d) hip bone
Answer: (b) skull
Question4. Knee joints are
(a) hinge joints
(b) ball and socket joints
(c) pivotal joints
(d) fixed joints
Answer: (a) hinge joints
Question5. Muscular foot is a locomotary organ in
(a) snakes
(b) earthworm
(c) housefly
(d) snails
Answer: (a) snakes
Question6. The body parts which are specialized to do important body activities eye called ……………. .
Answer: organs
Question7. Our skeleton is made up of many pieces of ………………. and …………….. .
Answer: bones, cartilage
Question8. We can get photographs of bones by a machine called ……………. machine.
Answer: X-ray
Question9. Lower jaw is ………….. .
Answer: movable
Question10. The place where two or more bones meet together is called a ……………. .
Answer: joint
Question11. How many types of joints are there in our body? Name them.
Answer:
There are five types of joints in our body:
Ball and socket joints
Hinge joints
Gliding joints
Pivotal joints
Fixed joints.
Question12. What are the features which help bird to fly?
Answer: The birds can fly because their bodies are well suited for flying. Their bones are hollow and light. The bones of the hind limbs are typical for walking and perching. The bony parts of the forelimbs are modified as wings. The shoulder bones are strong. The breastbones are modified to hold muscles of flight which are used to move the wings up and down.
Question13. Do all animals have bones?
Answer:
No, all animals do not have bones. Bones are present only in the backboned animals. Even among the backboned animals, the skeleton of sharks are made entirely of cartilage.
The jellyfish, leeches and worms have no hard structure to support their bodies.
Question14.What is cartilage? Give one example.
Answer:
These are some additional parts of the skeleton that are not as hard as the bones and which can be bent. For example, the upper part of our ear has cartilage.
Question15. What are the functions of skeleton?
Answer: Functions of skeleton are:
Skeleton system gives support to the body.
It protects the inner organs.
Together with muscles, it gives the body its shape.
Red blood cells and some white blood cells are produced in the marrow of the bone.
Question16. Name organs that are protected by rib cage.
Answer:
heart and lungs
Question17. Why do animals move from one place to other?
Answer:
Animals move from one place to other:
To obtain their food and shelter.
To protect themselves from enemies and unfavourable climate.
Question18. Name the organs of locomotion of:
Man
Bird
Fish.
Answer:
Man – Legs
Bird – Wings
Fish – Fins.
Question19. Name various parts of skeletal system.
Answer:
The skeletal system can be divided into following main parts:
Skull
Back bone
Limb bones
Chest bones
Shoulder bones
Hip bones.
