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Friday, 14 August 2026
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Biology Past Questions and Answers

Topic: Photosynthesis

Jamb Biology Questions - Photosynthesis

Question 6:
Which of the following elements are necessary for the formation of chlorophyll in a plant?
  • A Magnesium and iron
  • B Calcium and potassium
  • C Calcium and sulphur
  • D Potasium and sulphur
  • E Phosphorus and potassium
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Question 7:
Which of the following instruments is used for determining turbidity of water?
  • A Thermometer
  • B Secchi disc
  • C Rain guage
  • D Hydrometer
  • E Wind vane
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Question 8:
Oxygen liberated during photosynthesis has been demonstrated to come from
  • A Carbondioxide
  • B Air
  • C Water
  • D Chlorophyll
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Question 9:
In the standard experiment to show that oxygen is given off during photosynthesis, sodium bicarbonate is used to
  • A Neutralize the acid in water
  • B Supply mineral salt to water plant
  • C Supply carbondioxide for photosynthesis
  • D Kill micro-organisms in water
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Question 10:
The growth of a coleoptile towards unilateral light source is due to
  • A Rapid rate of photosynthesis
  • B Unequal distribution of auxin
  • C The effect of geotropism
  • D The effect of photolysis
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