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JAMB Biology 2005 Question 30

Question 30

Sense Organs

Use the diagram of the ear to answer: A function of the part labelled II is to

Diagram for this question
  1. A.equalize pressure on both sides of the tympanum
  2. B.conduct sound waves to the brain
  3. C.help the animal maintain balance or posture
  4. D.transform sound waves into electric impulses.
Show the answer and explanation

Answer: A (equalize pressure on both sides of the tympanum)

Explanation

II is the Eustachian tube, which links the middle ear to the throat. It lets air in or out so the pressure is the same on both sides of the eardrum.