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WAEC Biology 2019 Question 18

Question 18

Sense Organs

To focus on a distant object, the ciliary muscle of the eye

  1. A.contracts and the lens gets thicker.
  2. B.relaxes and the eye lens gets thinner.
  3. C.contracts and the eye lens gets thinner.
  4. D.relaxes and the eye lens gets thicker.
Show the answer and explanation

Answer: B (relaxes and the eye lens gets thinner.)

Explanation

For a far object the ciliary muscles relax, the suspensory ligaments become tight and pull the lens thin, so it bends light less.