You have to assume that somebody reading your experiment may know nothing about the subject so you must give them a quick summary.
If your hypothesis is proved, great, but the world of science does not stay still.
Here you should speculate where science goes next or what experiments you could do next.
For example, in the case of the mold bread experiment, after testing the effect of temperature, you could check whether the amount of light has an effect on the rate of growth.
If your hypothesis was wrong or unproven, this is not a problem.