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Biology 1990 WAEC Past Questions

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6
At the end of mitosis the number of cells produced from a parent cell is
  • A. four
  • B. six
  • C. eight
  • D. three
  • E. two
View Answer & Discuss WAEC 1990
7
Which of the following statements is not correct of respiration?
  • A. Gaseous exchange occurs by diffusion
  • B. Oxygen combines with haemoglobin at the respiratory surface
  • C. Carbondioxide produced in the tissues is removed by the process of osmosis
  • D. There are no special organs for respiration in plants
  • E. In higher animals, respiratory gases are transported in solution.
View Answer & Discuss WAEC 1990
8
At which of the following stages of mitosis do the two daughter chromosomes separate completely?
  • A. Early prophase
  • B. Telophase
  • C. Anaphase
  • D. Late prophase
  • E. metaphase
View Answer & Discuss (10) WAEC 1990
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9
Which of the following processes is not evident from the drawing?
  • A. Lining up of the chromosomes at the equatorial plate
  • B. Centromere attaching a pair of chromatids to a spindle fibre
  • C. Chromatids held by centromere
  • D. Absence of nuclear membrane
  • E. Chromatids moving to the poles
View Answer & Discuss (4) WAEC 1990
10

The stage of mitosis represented in the diagram is known as the

  • A. telophase
  • B. metaphase
  • C. anaphase
  • D. interphase
  • E. prophase
View Answer & Discuss (19) WAEC 1990
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