Plants have adapted to conditions on Earth. These include annual, daily light/dark cycles, seasons and temperatures. It will be important to understand this celestial motion on Earth and how it differs on Mars. Does the lunar cycle have any effect on growing plants? Would this have to be replicated on Mars?
These articles (1, 2, 3) will act as additional information for your research. You will need to examine other sites that explain these topics in more detail.
Divide the topics above among your group members so that you can maximize your group time.