Science [1 Marks Each] M.C.Q.

Our shoulder has the ball and socket joint that allows circular movement. When you bowl while playing cricket, you rotate your hand in full circle.

Insect is an arthropod. Arthropods move with the help of jointed appendages.

Gait means manner of movement.

Fins help the fish to move in water. The forward movement of the fish starts with front and sideways push of the tail. The flexible and strong tail fin of the fish pushes the water and propels the fish forward.

Coccyx.

Bone has a soft substance called bone marrow inside it.

Fibula.

In human body nose and ears contain cartilage.

 Cartilage is present in upper parts of the ear that is not as soft as the ear lobe, not shards as a bone.

Two muscles (a pair) work together to move a bone. When one muscle of the pair contracts, then the other muscle of the pair is relaxed. The alternate contraction and stretching brings about the movement.

Snake has a backbone. The animals with backbone are called vertebrates.

The remains of tiny sea animals resembling shells.

All of the above.

Hinge joint allows back and forth movement only. Bones in the knee, elbow, finger, and toes have hinge joint.

Pivot Joint.

Arm.

Tendons.

Skull.

Ball and socket joint.

Cockroach can walk, climb and can also fly in air. The muscles in the breast region move the legs for walking while another set of breast muscles move the wings during flying.

All of these.

The ribs make a cage of bones around the chest called rib cage. The rib cage in humans protects the heart and lungs.

Five.

All of these.

Our bones and muscles together form the musculoskeletal system that enables the movement of body parts and the whole body from one place to another.

Snakes.

The hinge joint between upper and lower arm and at knee allows back and forth movement.

Joint.

Hip and shoulder joints are called ball and socket joint.

Snakes have bones and muscles and moves by alternate contraction and expansion of body.

Scapula.

 It is not as hard as bones.

Pivotal joint where our neck joins the head.

Seven.

The skeletal system is the framework of bones that support our body and keeps it upright.

Skeletal system gives shape and support to our body. The backbone holds the body upright.

The fin-like flippers worn by underwater divers help to swim easily in water. It mainly helps to keep the balance of the body and to keep direction, while swimming (just as fins in fishes).

Skeletal system.

Neck joint is called pivot joint.

Side-to-side as well as backward and forward movement.

Earthworm.

Streamlined body.