Answer:
Independent variable: Different types of plants
Dependent variable: Number of flowers
Control group: None in this experiment
Constant: same time of recording
Explanation:
Independent variable in an experiment refers to the variable that is manipulated or changed by the experimenter in order to effect a response. In this experiment, the independent variable is the DIFFERENT TYPES OF PLANTS USED because it is what is changed by the person.
Dependent variable is the variable that the experimenter measures or records. In this case, the dependent variable is the NUMBER OF FLOWERS recorded for each type of plant.
The control group of an experiment is the group that does not receive any experimental treatment i.e. group placed on normal conditions for comparison. In this experiment, NO CONTROL GROUP was used or mentioned.
The constant or controlled variable is the variable that is kept constant or unchanged throughout the experiment in order not to influence the outcome. In this experiment, the person records the number of flowers on each plant at the SAME TIME (every week), hence, it is the constant.