Available Answers

1. 1.

   Match the words in Column 1 with those in Column 2.

   Column 1	Column 2
   a. Adrenalin	i. optic nerve
   b. Taste buds	ii. muscles
   c. Blind spot	iii. hormone
   d. Balance	iv. acoustic nerve
   e. Ear drum	v. groups of sensory cells
   f. Effector	vi. thin membrane

    

2. 2.

   Mark each statement True or False. Correct the false ones.

   1. Hormones are produced by effectors.
   2. Production of saliva is a reflex action.
   3. Loud sounds affect the inner ear.
   4. Eyes are harmed by washing too frequently.
   5. The blind spot is where te acoustic nerve enters the eye ball.
   6. All nerve impulses are sent to the brain via the spinal cord.
   7. The brain receives messages and therefore is a sense organ.
3. 3.

   Fill in the blanks.

   1. Actions which can be controlled are called _______________________.
   2. Binocular vision is found in ________________________.
   3. The ____________ are sensitive to bright light and colour.
   4. Another name for a sensory cell is __________________.
   5. Cells sensitive to smell are found in the _______________ of the nose.
4. 4.

   Differentiate between Voluntary and Reflex action.

5. 5.

   Differentiate between Receptors and Effectors.

6. 6.

   Differentiate between Monocular and Binocular vision.