Fig. 1 shows a leaf just after it has fallen from a growing plant. Fig. 2 shows a leaf from the same plant a few months after it dropped onto the soil beneath.
(a(i))[1]
Name the process that occurred and caused the leaf in Fig. 2 to look different from the one in Fig. 1.
(a(ii))[5]
Explain how the named microorganisms have carried out this process.
(b)[4]
Explain how the plant gains from this process occurring in the many leaves that fall from the plant onto the soil below.
Worked solution & mark scheme
This 10-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Decomposition or decay or rotting” …