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.
Whenever possible, a hypothesis should be tested by a controlled experimentâan. experiment in which only one variable (the independent variable, or manipulated. variable) is changed. The variable that can change in response to the independent variable. is called the dependent variable, or responding variable.