A group of high school students are conducting a scientific investigation in their biology class to study the effect of different types of fertilizer on the growth of tomato plants. Which of the following statement about their investigation is correct?

Question

The type of tomato plant is the dependent variable and the independent varible is the type of felizer
The type of fertilizer is the dependent variableand the independent va

Answer 1

In a scientific investigation, the independent variable is the factor that is manipulated or changed, while the dependent variable is the factor that is measured or observed.

In this case, the students are studying the effect of different types of fertilizer on the growth of tomato plants. Here:

• The independent variable is the type of fertilizer, as it is what the students are changing in order to observe its effect on plant growth.
• The dependent variable is the growth of the tomato plants (typically measured in terms of height, number of leaves, or biomass), as it is what is being measured in response to changes in the independent variable.

Therefore, the correct statement about their investigation is that the type of fertilizer is the independent variable and the growth of the tomato plants is the dependent variable.