Question

Which of the following is incorrect about the experiment performed by T. W. Engelmann?

• A. The experimental organism used was Cladophora (green algae).
• B. For the experimental purpose, the suspension of aerobic bacteria was utilized.
• C. The bacteria accumulated mainly in the region of the orange and green parts of the light spectrum.
• D. For splitting of light into its spectral component prism was used.

Answer 1

Answer: (C)

T.W. Engelmann experimented on Cladophora. He illuminated Cladophora with white light after passing through a prism. He used aerobic bacteria to detect the oxygen evolution site and observed that maximum bacteria accumulated in the blue and red region of the spectrum, indicating that maximum photosynthesis occurs in this region.