Cut a hole at the top end of the box. Discuss experiment controls. Plant and water seeds for the control. Put the mazes and control plant in a sunny window. Open the mazes only briefly every few days to observe and water.
Plants make food in chloroplasts, tiny green organs mostly in leaves.
Sandwich a leaf of a hardy plant like philodendron or geranium with black paper taped together. Remove paper after a week. Read our Privacy Policy Statement .