Available Answers

1. 1.

   Match the following.

   1. Cerebrum	a. Brain and spinal cord
   2. Medulla	b. Present at the bottom of the brain
   3. Cerebellum	c. Helps to keep balance
   4. Reflex action	d. Largest part of the brain
   5. Nervous system	e. Automatic action of the body

    

2. 2.

   Tick (√) the correct option.

   1. The outer/middle ear collects sound waves.
   2. The middle/inner ear is made up of tiny bones.
   3. The retina/cornea is the screen of the eye.
   4. The skin/tongue helps you to detect pain.
   5. The eyes are fixed in the eyelids/sockets.
3. 3.

   Complete the flow chart given below.

   

4. 4.

   Choose the correct answer.

   1. The system that controls all other systems of the body is the ________________.
      1. digestive system
      2. nervous system
      3. skeletal system
   2. The control centre of the body is the ____________.
      1. lungs
      2. heart
      3. brain
   3. The nerves that carry messages from brain to the muscles are the ______________.
      1. motor nerves
      2. sensory nerves
      3. optic nerves
   4. Medulla controls ________________.
      1. voluntary actions
      2. involuntary actions
      3. both of these
   5. Nerves that carry messages from the eye to the brain are the _______________.
      1. motor nerves
      2. optic nerves
      3. mixed nerves
   6. The largest part of the brain is the __________________.
      1. cerebrum
      2. cerebellum
      3. medulla
5. 5.

   Answer in one word.

   1. The largest sense organ
   2. Part of the eye on which the image is formed
   3. The part of the eye that controls the intensity of light entering the eye
   4. The sense organ that helps you to maintain your balance
   5. Part of the nervous system that controls the reflex actions
6. 6.

   Fill in the blanks.

   1. The nervous system is made up of the ____________, ___________ and ______________.
   2. The optic nerve is a ______________ nerve.
   3. The ______________ connects the brain to the spinal cord.
   4. The _____________ is the largest part of the brain.
   5. _____________ ear passed the sound waves to the ____________ ear.