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Biology Past Questions and Answers

Jamb Biology Questions

Question 26:
The irreversible life process by which new protoplasm is added to increase the size and weight of an organism can be termed
  • A Anabolism
  • B Catabolism
  • C Growth
  • D Development
View Answer & Explanation
Question 27:
Fruit enlargement can be induced by spraying young ovary with
  • A Cytokinin, abscisic acid and ethylene
  • B Gibberellin, ethylene and abscisic acid
  • C Auxin, abscisic acid and ethylene
  • D Auxin, cytokinin and gibberellin
View Answer & Explanation
Question 28:
A fundamental similarity between nervous and hormonal system is that both
  • A Involve chemical transmission
  • B Have widespread effects
  • C Shed chemicals into the blood stream
  • D Evoke rapid responses
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Question 29:
The region that control most of the unconscious processes of a mammalian body is the
  • A Cerebellum
  • B Cerebrum
  • C Spinal cord
  • D Medulla oblongata
View Answer & Explanation
Question 30:
During cell division, the two strands of chromosomes are joined at a point called
  • A Spindle
  • B Chromatid
  • C Centromere
  • D Aster
View Answer & Explanation