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Wednesday, 01 April 2026
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Biology Past Questions and Answers

Jamb Biology Questions

Question 26:
Homologous pairs of chromosome separate during
  • A Cytolysis
  • B Cleavage
  • C Mitosis
  • D Meiosis
View Answer & Explanation
Question 27:
An example of a caryopsis is
  • A Guava
  • B Maize grain
  • C Coconut
  • D Tomato
View Answer & Explanation
Question 28:
The response of plants to external stimuli in a non-directional manner is known as
  • A Tactic movement
  • B Phototropism
  • C Geotropism
  • D Nastic movement
View Answer & Explanation
Question 29:
The most important hormone that induces the ripening of fruit is
  • A Ethylene
  • B Indole acetic acid
  • C Gibberallin
  • D Cytokinin
View Answer & Explanation
Question 30:
A density-dependent factor that regulates the population size of organism is
  • A Disease
  • B Sudden flood
  • C Drought
  • D Fire outbreak
View Answer & Explanation