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2 marksIrritability and Response

CSEC Biology · January 2020 · Paper 2 · Question 3(b)(ii)

John is nearsighted but his sister Mary has normal vision. What would cause John's sight to be different from Mary's?

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Other parts of this question

  1. 3(a)(i)Describe the process by which the structure of the boy's eye will allow him to read the book.[3 marks]
  2. 3(a)(ii)Describe the process by which the structure of the boy's eye will allow him to observe his friends playing in the distance.[3 marks]
  3. 3(b)(i)Name the type of corrective lens which would help the boy see distant objects clearly if he is nearsighted.[1 mark]
  4. 3(b)(iii)How would wearing corrective lenses/glasses allow John to see objects as clearly as Mary?[2 marks]
  5. 3(c)Explain why the appearance of the boy's eyes while seated under the shade of the tree would be different if he is seated in the sun.[4 marks]

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