Carp are fish. In Brazil, researchers recorded the body lengths of a carp population in a river in 1998 and then repeated the measurements in 2008. Their histograms are shown in Fig. 2.1.
(a)[2]
Define population.
(b)[3]
Describe how body length varies in the carp population in 1998. Support your answer with evidence from Fig. 2.1.
(c(i))[2]
Calculate the overall carp population in 2008. Show your working.
(c(ii))[4]
Explain how fish stocks may be sustained.
(d(i))[2]
Suggest what makes body length vary within a fish population.
(d(ii))[1]
Name the graph type that should be used to show discontinuous variation.
Worked solution & mark scheme
This 14-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Group or number of organisms of one species” …