Fig. 10.1 illustrates the movement of energy through a simple food chain. For every 200 J of energy in the cabbage eaten by the caterpillar, 35 J is transferred to the bird. In the diagram, a cabbage has an arrow marked 200 J pointing to a caterpillar. From the caterpillar, an arrow marked 35 J points to a bird. From the caterpillar, an upward arrow is labelled "lost in faeces 100 J" and a downward arrow is labelled "3 J lost in respiration".
(a)[2]
Calculate the percentage of energy that moves from the cabbage to the bird in this food chain. Show your working.
(b(i))[2]
Use the information given to calculate the energy the caterpillar loses in respiration. Show your working.
(b(ii))[1]
Suggest one further way in which the caterpillar uses energy during its lifetime.
Worked solution & mark scheme
This 5-mark question has a full step-by-step worked solution and mark scheme. One marking point: “17.5%” …