What Color of Light Is Best for Growing Plants?
• Set up five tall jars with seeds and wrap each jar twice around in a different color of plastic wrap (red, green, blue, yellow, and clear). • Place them in the same location and observe for about 10 days. • Determine which of these colors of light plants need for photosynthesis by observing the height and color of the plants grown in the different colors of light. Questions: • Which color of plastic wrap represents the control? (Clear.) • Plants grown under which color of light are the greenest? (Results will vary depending on the type of plant and it’s most active type of chlorophyll. The color of plastic wrap is the color of light the plant receives. All other colors are filtered out by the plastic.) Experiment: EXPERIMENT 8: THE POINT OF LIGHT How Does a Plant Respond to Light from Only One Direction? • Wrap a jar with radish seeds in aluminum foil. • Cut a circle about 3/4″ in the foil on one side of the jar and draw this circle on the jar with a marker to mark the location of th
