Cameroon GCE O Level 2015 Biology 2 past Question Paper 2 (Biology II 510 GCE Board)
(c) The table below shows the population size of both predators and preys within a certain community. The time was recorded in weeks.
|Number of predators||220||190||330||220||130||490|
|Number of preys||340||440||200||360||640||370|
(i) Plot the two curves with time on the horizontal axis and population‘on the vertical axis. (5 marks)
(ii) Determine the population of preys and predators at week 10 and week 20. (4 marks)
(iii) Determine the first time when the population of preys will be equal to that of predators. (1 mark)
(Total = 25 marks)