Question

A researcher wants to test if juvenile hormone (similar to testosterone) is associated with aggression in paper wasps. The researcher films wasp interactions between wasp pairs in which one individual is given extra juvenile hormone. The researcher also films wasp interactions between pairs in which neither individual is given extra testosterone. Filming conditions are the same for each pair and the level of aggression is recorded. What is the control in this experiment?

Answer 1

Answer:

The pairs in which neither individual is given extra juvenile hormone

Explanation:

A controlled experiment is defined as an experiment in which all factors that are a part of the experiment are held constant excluding one i.e the independent variable.

An ordinarily controlled experiment contrasts a control group over an experimental group. All variables are similar between two groups excluding the factor which is being tested.

Controlled variables are always being held constant.