Search SchoolNGR

Friday, 13 November 2026
Register . Login

Biology Past Questions and Answers

Waec Biology Questions

Question 1116:
Which of these values in kj/m2 likely represents the energy content of the producers in a habitat?
  • A 5033
  • B 100
  • C 12
  • D 10
View Answer & Explanation
Question 1117:
The major pollutant around airport residential areas is
  • A Oil spillage
  • B Soot
  • C Noise
  • D Dust
View Answer & Explanation
Question 1118:
The effect of chlorofluorocarbon is
  • A Reduction of oxygen concentration in the atmosphere
  • B Depletion of the ozone layer
  • C Screening of ultra violet rays
  • D Increase in carbon dioxide concentration
View Answer & Explanation
Question 1119:
The order of primary succession by plants in a very dry habitat is
  • A Xerophytes → mesophytes shrub
  • B Mesophytes → xerophytes → shrub
  • C Mesophytes → shrub -> xerophytes
  • D Xerophytes → shrub → mesophytes
View Answer & Explanation
Question 1120:
A population which exceeds its carrying capacity and then collapses is represented graphically as a
  • A Bell shaped curve
  • B Skewed curve
  • C S-shape curve
  • D Linear curve
View Answer & Explanation