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Wednesday, 01 April 2026
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Biology Past Questions and Answers

Biology Questions

Question 2991:
The structures labelled II are associated with
  • A Storage of plant nutrients
  • B Organic acids
  • C Nitrogen-fixing bacteria
  • D Putrefying microbes
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Question 2992:
Using iodine solution, Biuret test, Benedict reagents and ethanol, respectively in testing for reducing
sugars, which of the following trends of colour changes would be observed?
  • A Blue → black → blue → brown → clear
  • B Brown → blue → brick red → clear
  • C Brown → violet → blue → clear
  • D Brown → blue → violet → milky
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Question 2993:
Ecology simply means the study of
  • A The properties of a habitat
  • B Interrelationship between organisms and their environment
  • C Several species of plants and animals
  • D Interrelationship between plants and animals.
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Question 2994:
Which of the following processes removes water from the water cycle?
  • A Condensation
  • B Perspiration
  • C Photosynthesis
  • D Transpiration
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Question 2995:
The importance of practising crop-rotation in agriculture is to
  • A Control soil erosion
  • B Maintain the fertility of the soil
  • C Improve the nutritional value of crops
  • D Ensure growth of cash crops
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