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WAEC Biology 1991 (August) Question 18

Question 18

Hormonal Coordination

Over-secretion of thyroxin is likely to lead to

  1. A.thinness of body
  2. B.sluggishness
  3. C.cretinism in infants
  4. D.reduced metabolism
  5. E.dwarfism
Show the answer and explanation

Answer: A (thinness of body)

Explanation

Too much thyroxin speeds up metabolism, so food is burnt quickly and the person becomes thin and restless.