Theodor W.Engelmann illuminated a filament of algae with light that passed through a prism,thus exposing different segments of algae to different wavelengths of light.He added aerobic bacteria and then noted in which areas the bacteria congregated.He found that the largest groups were found in the areas illuminated by the red and blue light.This experiment helped to determine the relationship between which of the following parameters?
A)heterotrophic and autotrophic organisms
B)wavelengths of light and the rate of aerobic respiration
C)wavelengths of light and the amount of heat released
D)wavelengths of light and the rate of photosynthesis
E)the concentration of carbon dioxide and the rate of photosynthesis

Question

Quizplus · Accepted Answer

The experiment conducted by Engelmann helped to determine the relationship between different wavelengths of light and the rate of photosynthesis in the algae. The areas illuminated by red and blue light had the largest congregations of aerobic bacteria, indicating that these wavelengths were most effective in driving photosynthesis, while areas illuminated by other wavelengths had fewer or no bacteria congregations.

Theodor WEngelmann Illuminated a Filament of Algae with Light That Passed