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WAEC Biology 2017 Question 44

Question 44

Variation

Use the diagram below. Which of the following characters is not a morphological variation?

Diagram for this question
  1. A.Shape of the nose
  2. B.Colour of skin
  3. C.Colour of hair
  4. D.Tongue rolling
Show the answer and explanation

Answer: D (Tongue rolling)

Explanation

Morphological variations are differences in visible structure, such as nose shape, skin colour and hair colour. Tongue rolling is an ability, so it is a physiological variation.