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Monday, 13 April 2026
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Biology Past Questions and Answers

Jamb Biology Questions

Question 11:
The butterfly is of great economic importance because
  • A Of its use in scientific studies
  • B It sucks nectar from flowers
  • C It adds to the beauty of the enviroment
  • D It polllinates flowers of crops and other plants
View Answer & Explanation
Question 12:
Manufactured food in the plant is transported through the
  • A Xylem
  • B Phloem
  • C Cambium
  • D Cortex
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Question 13:
interveinal chlorosis is normally associated with the deficiency of
  • A Magnesium
  • B Potassium
  • C Iron
  • D Calcium
View Answer & Explanation
Question 14:
Osmic acid boiled with a solution of food substance gave a black precipitate. This indicates the presence of
  • A Fats and oil
  • B Proteins
  • C Amino acids
  • D Starch
View Answer & Explanation
Question 15:
Which of the labelled parts is the diastema?
  • A 2
  • B 3
  • C 4
  • D 6
View Answer & Explanation