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Thursday, 30 April 2026
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Biology Past Questions and Answers

Jamb 1999 Biology Questions

Question 36:
Vaccination is carried out in order to
  • A Check the production of poison
  • B Increase the activity of white blood cells
  • C Increase the number of red blood cells
  • D Stimulate the production of antibodies
View Answer & Explanation
Question 37:
A soil consisting of alumina and iron (II)oxide is known as
  • A Loamy soil
  • B Clayey soil
  • C Laterite
  • D Podzol
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Question 38:
The sign + is used to indicate an association where an organism gains, while 0 is used where an organism is unaffected. An association indicated as +0 is known as
  • A Predation
  • B Commensalism
  • C Parasitism
  • D Competition
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Question 39:
Which of the following characterizes the white mangrove?
  • A Prop roots
  • B Buttress roots
  • C Breathing roots
  • D Stilt roots
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Question 40:
If the offspring of a cross between a brown mouse (bb) and a black mouse (BB) are allowed to interbreed, how many different genotypes would result?
  • A 2
  • B 3
  • C 4
  • D 5
View Answer & Explanation