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Friday, 12 June 2026
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Biology Past Questions and Answers

Waec Biology Questions

Question 221:
Which of the following explains the term pyramid of numbers?
  • A The number of organisms in a trophic level
  • B The relationship between plants in different trophic levels
  • C The number of saprophytes and parasites in a habitat
  • D The number of predators in a habitat
  • E Progressive decrease in the number of individuals from lower to higher trophic level
View Answer & Explanation
Question 222:
In which of the following processes is carbondioxide not given out?
  • A Respiration in plants
  • B Decay of organism
  • C Burning of organic matter
  • D Burning of fuels
  • E During photosynthesis
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Question 223:
Sea water taken in by a living organism can berecycled into the atmosphere through all the following processes except
  • A Sewage
  • B Industrial wastes
  • C Fertilizers
  • D Crude oil
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Question 224:
Which of the following is not an adaptation of plants or animals to desert environment?
  • A Well developed tap root system
  • B Small leaves with thick epidermis
  • C Stems with spike-like leaves
  • D Metabolic waste in the form of uric acid in some animals
  • E Broad leaves for storage
View Answer & Explanation
Question 225:
Which of the following is not an adaptation of plants or animals to desert environment?
  • A Well developed tap root system
  • B Small leaves with thick epidermis
  • C Stems with spike-like leaves
  • D Metabolic waste in the form of uric acid in some animals
  • E Broad leaves for storage
View Answer & Explanation