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Biology WAEC Past Questions

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1991

In an experiment, mould and yeast cells were transferred into an environment with low oxygen concentration. After a few days, the mould dies while the yeast cells did not. Which of the following statements best explains the following observation.

  • A. The yeast cells carried out photosynthesis while the mould did not
  • B. Photosynthesis does not take place in the absence of oxygen
  • C. Respiration can take place in yeast cells in the absence of oxygen
  • D. Respiration does not occur in the mould
View Answer & Discuss WAEC 2020
1992

Which of the following tissues does not provide support in flowering plants?

  • A. Collenchyma
  • B. Parenchyma
  • C. Xylem
  • D. Phloem
View Answer & Discuss (7) WAEC 2020
1993

The diagram is an illustration of an experimental set-up. Study it and answer the question;

The set-up directly measure 

 

 

  • A. transpiration of water by the shoot
  • B. evaporation of water from the leaves
  • C. absorption of water by the shoot
  • D. loss of mineral salts from the leaves
View Answer & Discuss (5) WAEC 2020
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1994

The diagram above is an illustration of an experimental setup. Study it and answer the question below;

The setup can measure comparatively the rate of 

  • A. evaporation from leaves on a single shoot under different experimental conditions
  • B. salt uptake by shoots from different plants
  • C. transpiration of a single shoot of a plant under different experimental conditions
  • D. water uptake by roots of different plants
View Answer & Discuss (7) WAEC 2020
1995

The respiratory organ of a cockroach

  • A. air sac
  • B. trachea
  • C. lung book
  • D. lung
View Answer & Discuss (1) WAEC 2020
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