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Friday, 02 October 2026
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Biology Past Questions and Answers

Topic: Excretory products of plants

Jamb Biology Questions - Excretory products of plants

Question 6:
A young plant showing yellow leaves is likely NOT to be deficient in?
  • A Calcium
  • B Magnesium
  • C Potassium
  • D Boron
View Answer & Explanation
Question 7:
The main waste products formed in plants are
  • A Alkaloids tannins and resins
  • B Water, alkaloids and carbondioxde
  • C Oxygen, carbondioxide and alkaloids
  • D Water, carbondioxide and oxygen
View Answer & Explanation
Question 8:
Which of the following is a dangerous product of coal burning?
  • A Sulphur dioxide
  • B Carbon dioxide
  • C Carbon
  • D Nitrogen
View Answer & Explanation
Question 9:
Excretory products responsible for the red, purple and blue colours of flowers are called
  • A Alkaloid
  • B Tannins
  • C Anthocyanins
  • D Resins
View Answer & Explanation
Question 10:
Which of the following is a plant excretory product?
  • A Oil
  • B Cytokinin
  • C Resin
  • D Amino acids
View Answer & Explanation