(ii) Describe an investigation you could do to show how much more a norm plant grows compared with a variegated plant over a six-we ek period. In your answer , you must clearly identify: the independent variable (IV) the dependent variable (DV) the variables to control (CV) how you will calculate the end result.

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(ii) Describe an investigation you could do to show how much more a norm plant grows compared with a variegated plant over a six-we ek period. In your answer , you must clearly identify: the independent variable (IV) the dependent variable (DV) the variables to control (CV) how you will calculate the end result.

Answer 1

- The Independent Variable (IV) is the Type of Plant. - The Dependent Variable (DV) is the Growth of the Plant. - The Control Variables (CV) include environmental conditions like light, regular watering, maintained temperature cylce and the same type of soil. - The end result calculation is done by making a comparison of plant height at the start and at the end of six week, thus, noting down the total growth over that period.

Answer 2

To conduct an investigation comparing the growth of a norm and variegated plant over six weeks, we need to set up an experiment which will manipulate one aspect while keeping other factors constant, allowing us to observe the impact of that manipulation on the plant growth. For this experiment, the independent variable (IV) is the 'type of plant'. This is the factor that we are intentionally altering, i.e., we have two types - norm plant and variegated plant. We are interested in seeing how this affects our dependent variable. The dependent variable (DV) is the 'growth of the plant'. This is the factor that we’re observing change over the six-week period. We suspect this may be influenced by the type of plant, hence it's the dependent variable, because it depends on the different plant types (the independent variable). There will be other variables in the natural environment which could influence plant growth, such as light levels, watering conditions, temperature, quality of soil, etc. We need to measure and control these to be repeated for both types of plants. These are our controlled variables (CV) and include the same amount and intensity of light, the same temperature and watering routine, and identically composed and amount of soil, to rule out the possibility of these variables affecting the growth of the plants. About the measurement, the first step would be measuring the physical height of both types of plants at the start of the experiment. Subsequent measurements of physical height should be identical, with calculations taking place at regular intervals over a six-week period. Marking on the side of the pot can help ensure the integrity of the measuring process when repeated. The end result can be calculated by taking an initial plant height measurement at the start of the experiment and then subtracting this from the final height measurement at the end of the six weeks. This gives the total growth. To summarize: - Independent Variable: Type of Plant (Norm vs. Variegated) - Dependent Variable: Growth of the Plant - Variables to Control: Environmental factors (Same light levels, watering conditions, temperature, soil conditions.) - Calculation Method: By calculating the difference between the initial and final height measurements.

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