Biology 5090 · O Level · Ecosystems and biodiversity
Ecosystems and biodiversity — practice question
Fig. 4.1 illustrates the links among several organisms living together in a South American rainforest.
(a)[4]
Fig. 4.2 is an unfinished food web for these organisms. Complete Fig. 4.2 by:
• placing the name of an organism in every box,
• finishing the arrows so they indicate energy flow.
(b)[2]
Name the type of seed dispersal shown by the Brazil nut tree. Give a reason for your answer.
(c)[6]
Suggest the possible consequences for the rainforest community if disease killed the orchids.
Worked solution & mark scheme
This 12-mark question has a full step-by-step worked solution and mark scheme. One marking point: “from humans / nut collectors to jaguars” …