Will bean seeds grow faster with light or without?
actually a bean seed will grow faster in the dark. it grows faster because of its conditions, it has to grow higher to reach any light. Although it may grow faster it has less colour and 'attractiveness' aha. it turns into a white, pale colour, with no leaves.
Vanilla extract, as it sounds, is the vanilla flavor extracted from the vanilla bean. The bean is a long, brown bean which is sliced lengthwise (picture slicing a green bean) and exposing many, many small black seeds. These seeds are what give the vanilla flavor. If one has ever eaten a higher quality vanilla cake and noticed black seeds in the cake, these are the seeds from the vanilla bean.
Your hypothesis is the answer to that question. It could be like 'only 50% of the sugar bean seeds germinated because the other 50% was afraid of the light. ' The next step is to find some tests you could do to disprove your hypothesis(prove the hypothesis is wrong). Like letting your seeds germinate in the dark (but at the same temperature and humidity) and when illuminated with red, blue, or white leds.