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Thursday, 02 April 2026
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Biology Past Questions and Answers

Jamb Biology Questions

Question 11:
The organ through which food and oxygen are supplied to the human embryo and which also prevents harmful materials from reaching the embryo is the
  • A Amnion
  • B Uterus
  • C Placenta
  • D Umbilical cord
  • E Fallopian tube
View Answer & Explanation
Question 12:
A true fruit is formed from
  • A A fertilized ovary and other floral parts
  • B A fertilized ovary
  • C A fertilized ovary and calyx
  • D A fertilized ovary and fleshy receptacle
  • E An unfertilized ovary and other floral part
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Question 13:
Water is required for seed germination to take place because it
  • A Activates the enzymes
  • B Softens the testa
  • C Liberates energy for growth
  • D Permits radicle growth
  • E Allow oxygen to diffuse into the seed
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Question 14:
A fresh Kolanut weighing 1g was put into salt solution. After 3 hour, the kolanut weighed 1.2g. This simple experiment demonstration that
  • A The salt solution is more concentrated that the cell sap of the kolanut
  • B The cell sap of the kolanut is more concentrated than the salt solution
  • C The salt solution has the same concentration as the cell sap of the kolanut
  • D Kolanut cell can multiply in water
  • E The kolanut lost some water molecules to the salt solution
View Answer & Explanation
Question 15:
The joint between the atlas and axis vertebrae allows for
  • A Rotatory movement only
  • B Up and down or nodding movements only
  • C Rotatory and nodding movements
  • D No movement at all
  • E Slight movement
View Answer & Explanation