NEET BIOLOGY

Detailed explanation-1: -Controls or Controlled Variables A part of the experiment that is not being tested and is used for comparison of the experimental results. A control group should be used when conducting an experiment.

Detailed explanation-2: -Answer and Explanation: In all scientific experiments, it is important to have a frame of reference to compare your results to. This unchanged group, which is subjected to no experimental variables, is called the control.

Detailed explanation-3: -control group, the standard to which comparisons are made in an experiment. Many experiments are designed to include a control group and one or more experimental groups; in fact, some scholars reserve the term experiment for study designs that include a control group.

Detailed explanation-4: -c) The experimental group shows the effect of the variable that is being tested. Example: In order to test the effectiveness of a new vaccine, 50 volunteers are selected and divided into two groups. One group will be the control group and the other will be the experimental group.