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.
The power of a hypothesis test is affected by three factors. 1  Sample size (n). Other things being equal, the greater the sample size, the greater the power of the test. 2  Significance level (Î±). The higher the significance level, the higher the power of the test. 3  The true value of the parameter being tested.