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Thursday, 30 April 2026
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Biology Past Questions and Answers

Jamb 1999 Biology Questions

Question 26:
Bacteria multiply rapidly by means of
  • A Budding
  • B Fragmentation
  • C Binary fission
  • D Spore formation
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Question 27:
The correct sequence for the perception of smell in mammals is
  • A Chemicals → olfactory nerve endings → brain
  • B Dissolved chemicals → nasal sensory cell → brain
  • C Chemicals → mucus membrane → sensory cells→ brain
  • D Dissolved chemicals → sensory cells → olfactory nerve → brain
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Question 28:
The part labelled III is for
  • A Protection
  • B Insulation
  • C Lubrication
  • D Growth
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Question 29:
The structure labelled II is known as
  • A Sweat gland
  • B Lymph vessel
  • C Blood vessel
  • D Nerve ending
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Question 30:
In mammals, the organ which performs digestive and endocrine functions is the
  • A Liver
  • B Pancreas
  • C Gastric gland
  • D Salivary gland
View Answer & Explanation