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Biology 1993 JAMB Past Questions

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21
Which of the following is TRUE of the process of conjugation in paramecium?
  • A. Micronucleus disintegrates
  • B. Each ex-conjugant divides only once
  • C. Macronucleus undergoes division
  • D. Each micronucleus divides twice
View Answer & Discuss (9) JAMB 1993
22
The bright colours of the comb and feathers in the peacock are for
  • A. sex differenciation
  • B. beauty
  • C. courtship
  • D. defence
View Answer & Discuss (2) JAMB 1993
23
The main function of the petal of a flower is to
  • A. attract pollination agents
  • B. protect the flower while still in bud
  • C. serve as landing stage for insects
  • D. protect the inner paisr from desiccation
View Answer & Discuss (1) JAMB 1993
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24
In the mammal, the autonomic nervous system consists of
  • A. sympathetic and parasympathetic system
  • B. brain and spinal nerves
  • C. brain and cranial nerves
  • D. spinal cord and spinal nerves
View Answer & Discuss (1) JAMB 1993
25
In H, the cotyledons are carried above the soil because
  • A. the epicotyl grows faster than the hypocotyl
  • B. the hypocotyl grows faster than the epicotyl
  • C. both grow at the same rate
  • D. the epicotyl outgrow the radicle
View Answer & Discuss (6) JAMB 1993
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