Results:
The seeds in the cupboard, away from the light, will not grow. Only the plants that received light will sprout.
Why?
Plants need light -- they can't survive without it. Light is a very important part of photosynthesis, the process plants use to convert carbon dioxide and water into food. Without light, photosynthesis can't work properly, and without photosynthesis, plants don't get all the food they need to grow healthy and strong. A good tip to remember? Plants always need the presence of three things to grow: water, heat and light.
That's not to say, however, that all plants need the exact same levels or types of light. Some plants require lots of warm sunshine, but others are okay with just a few hours of cool light. Do you think you can find out which plants love the heat and which ones are okay without it? Try another growing experiment and play with new ways to study plants and light. Continuing to guess and test your ideas is a big part of being a real scientist!