There is a difference between a hypothesis and a prediction. 

Let's look at this statement: "If I keep a plant from getting sunlight, it will die"

Hypothesis or prediction? If you answered prediction you're correct. Why is that? A hypothesis must be worded in a way that is shows a relationship that can be tested. If I asked you to rephrase the prediction as a hypothesis one possible response might be: "If sunlight is necessary to the survival of a plant, then when a plant is deprived of sunlight, it will die." 

A hypothesis implies a question to be answered. Read more about Predicting vs Hypothesis on the Mad About Science page, there's even a fun video at the bottom of the page.