is bladderwort a producer of a consumer. An animal that can't produce its own food and it eats plants and other animals. That is what a consumer is.
If it is; What is the purpose of a control in verifying a hypothesis or conducting an experiment, it is: Controls are needed to eliminate alternate explanations of experimental results. That is in order to test a particular variable you need a control. For e.g.
Experimental Design. The purpose of an experiment is to investigate the relationship between two variables to test a hypothesis. By using the scientific method , a psychologist can plan and design an experiment that will answer the research question. The basic steps of experimental design are: