Consider the Following: You Continue Your Experiments by Taking One

Multiple Choice

Consider the following: You continue your experiments by taking one of the trees in the canopy and removing all of the ants. If the ants and aphids are in a mutualistic relationship that strongly benefits them both, you expect the aphid population will decrease in size in response to the lack of ants. The BEST control for your experiment in this scenario is a tree in which you _____ and you measure the abundance of _____ over time.

A) do not remove any insects; ants
B) do not remove any insects; aphids
C) add a second ant species; the first ant species
D) Actually, the control is built into the original experiment. You do not need to set up a separate control.