Question 35
FThe Figure shows a card used to test colour vision.
A person with normal colour vision sees the number 6 on the card.
Figure
a.[1]
Name the type of cell in the retina that detects colour.
b.[2]
A man with red-green colour blindness cannot see the number on the card.
Explain why.
c.[2]
Colour blindness cannot be corrected by wearing glasses.
Explain why.
d.[1]
Suggest one difficulty that a person with red-green colour blindness may have in everyday life.
2.4 The eye Questions
102 exam-style questions on Edexcel GCSE Biology 2.4 The eye, covering 2.4.1 Structure and function of the eye and 2.4.2 Eye defects and their correction. Each one has a worked solution and a mark scheme showing where the marks go.