Available Answers

1. 1.

   Tick (√) the correct options:

   1. The only movable bone in the skull is ________________
      1. the upper jaw
      2. the lower jaw
      3. face bone
      4. ear bone
   2. Which of the following has ball and socket joint?
      1. Shoulder
      2. hips
      3. both of these
      4. none of these
2. 2.

   Tick (√) the correct options:

   1. Muscles are attached to the bones by means of _______________.
      1. tendons
      2. ligaments
      3. biceps
      4. triceps
   2. The number of skeletal muscles is human body is _______________.
      1. 639
      2. 656
      3. 650
      4. 800
3. 3.

   Tick (√) the correct options:

   1. Which of the following has a liquid skeleton?
      1. fish
      2. snake
      3. bird
      4. earthworm
   2. Snakes have special structures called _______________ that help them to crawl.
      1. cerci
      2. fins
      3. scales
      4. bellies
   3. Which of te following help a bird to fly?
      1. streamlined body
      2. hollow bones
      3. wings
      4. all of these
   4. Movement is brought about by the contraction and relaxation of _______________.
      1. bones
      2. muscles
      3. joints
      4. both (b) and (c)
   5. The joint in our elbow is an example of _______________ joint.
      1. pivot
      2. ball and socket
      3. hinge 
      4. gliding
   6. We can identify the various joints of our body with the help of a/an _______________.
      1. microscope
      2. telescope
      3. X-ray
      4. stethoscope
4. 4.

   Fill in the blanks:

   1. The part of a skeleton where two or more bones meet is a _______________.
   2. _______________ protects heart and lungs.
   3. The muscles of the _______________ enable the snails to move forward.
   4. joints help in the _______________ of the body.
   5. _______________ is the longest bone in our body.
5. 5.

   State whether the following statements are true (T) or false(F). Rewrite the false statements correctly:

   1. Fishes have fins for swimming.
   2. The finger bones do not have joints.
   3. The forelimbs have two bones.
   4. Snails move with the help of wings. 
6. 6.

   How many types of girdles are found in human body?