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.
Robot: Step four... TEST YOUR HYPOTHESIS. Teacher: To test your hypothesis, you have to set up your experiment so that it has only one variable. That way, you can be fairly sure that the changes you observe are caused by that variable. You should also set up a control, which is a different setup that does not have the variable you're testing.