Different shades of light have different wave lengths; the longer the wave lengt

Question

Different shades of light have different wave lengths; the longer the wave length, the slower the speed of the wave is, the shorter the wave length, the faster the speed of wave . Plants grow in sunlight which is white light of all the lights in the visible spectrum put together.

The number of seeds germinated in red light will be more compared to other wavelength lights.Plants are grown best under red light because photochromic pigments absorb the red light resulting in seed germination, root development, flowering and fruit production.

Since longer wavelengths should result in larger percentages of germinated seeds, the order of light that will germinate the most seeds should be red, yellow, and lastly green.

Explanation / Answer

A biology class wants to perform an experiment to investigate the effect of different colors of light on seed germination. They wrap clear glass jars with green, yellow, red, and clear cellophane and plant three seeds in each one. What part do the three colors of cellophane play in this experiment? Dependent variables Control variables Confounding variables Independent variables

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