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Monday, 22 June 2026
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Biology Past Questions and Answers

Waec Biology Questions

Question 706:
A major reason why the red blood cells can survive in the blood is that the
  • A Blood plasma and the red blood cells are isotonic
  • B Red blood cells are hypotonic to the plasma
  • C The red blood cells are hypertonic to the blood plasma
  • D The red blood cells receive digested nutrients
View Answer & Explanation
Question 707:
Which of the following phenomena affects plants growth in an alkaline soil?
  • A Excessive plasmolysis
  • B Excessive transpiration
  • C Excessive sunlight
  • D Poor drainage
View Answer & Explanation
Question 708:
A red blood cell haemolyses when placed in a hypotonic solution because
  • A It contains haemoglobin
  • B The cytoplasm is less dense
  • C The cell lacks a wall
  • D Its pigment has a high affinity for water
View Answer & Explanation
Question 709:
Which bf the following structures are visible in the cell of a plant during mitosis?
  • A Centrioles, chromatids and nucleolus
  • B Homologous chromosomes, nuclear membrane and spindle fibres
  • C Cell wall, centrioles and chromatids
  • D Chromosomes, nuclear membrane and centromere
View Answer & Explanation
Question 710:
Display is a phenomenon which occurs when an animal is
  • A Ready for mating
  • B Fighting to defend itself
  • C Approaching puberty
  • D Chasing away an intruder
View Answer & Explanation