Sue is setting up an experiment to test whether fly maggots select a dark or a brightly lit environment. She sets up a chamber in which there is a gradient in light intensity from one end (dark) to the other (brightly lit). The experimental hypothesis was “There will be a large difference between the number of maggots in a dark environment and the number in a brightly illuminated one.”
Which of the following is Sue’s control condition? Select one option from the list below.
1) The same chamber and maggots but with a different light intensity gradient.
2 ) The same chamber and maggots but with a coloured light gradient.
3 ) An identical chamber with the gradient in illumination reversed. wrong answer
4) An identical chamber but with maggots of a different species.
5) An identical chamber with no light gradient.
6) A chamber with a different distance between the darkest and most brightly lit parts.
7) An experiment at a different time of day.
for control condition (B)
and For Experimental control (c) someone tell me the correct answer plz.
why do you keep posting the same question? You must really need help...
Well, the question asks to choose the option that is a (Sue's) controlled condition.
A "Controlled Condition" means that variables that can affect the data collected from an experiment are monitored and held constant.
I really wish I knew the answer, but if I were you I guess I'd go with option 1. :)
5
that way you can see if the maggots gather even without the light gradient
although I would do 3
The control condition in an experiment is a condition in which the independent variable is not altered or manipulated. Its purpose is to serve as a baseline for comparison, allowing researchers to determine the effect of the independent variable by comparing it to the control condition.
In this case, Sue's experimental hypothesis is about the difference between the number of maggots in a dark environment and a brightly lit one. To identify the control condition, we need to find an option that closely resembles the experimental conditions but without manipulating the light intensity gradient.
Among the given options, the correct answer for Sue's control condition is:
5) An identical chamber with no light gradient.
By setting up an identical chamber with no light gradient, Sue can observe and compare the behavior of the maggots in the absence of any gradient in light intensity. This will allow her to understand the baseline response of the maggots without the influence of varying light conditions.