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Biology 2007 WAEC Past Questions

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26
The mode of nutrition common to green plants is
  • A. autotrophic
  • B. heterotrophic
  • C. holozoic
  • D. saprophytic
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27
Micronutrients essential for the synthesis of chlorophyll include
  • A. iron and potassium
  • B. iron and magnesium
  • C. magnesium and calcium
  • D. magnesium and potassium
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28
Biuret’s test is carried out on a food substance to indicate the presence of
  • A. vitamins B
  • B. fats
  • C. proteins
  • D. starch
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29
In a test for non-reducing sugars like sucrose, what is the significance of adding dilute hydrochloric acid to the original sugar solution? To
  • A. hydrolyse the non-reducing sugar
  • B. accelerate he rate of the reaction
  • C. stabilize the medium
  • D. sterilize the solution
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30
'The colour that is associated with a positive iodine test is
  • A. brown
  • B. red
  • C. blue-black
  • D. yellow
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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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