Question

In photosythesis action and absorption spectrum were related by:

• A. Von Helmont
• B. Engelmann
• C. Emerson
• D. Lavosier

Answer 1

Answer: (B)

Engelmann

Answer 2

Engelmann studied the effect of different region of the visible spectrum on the rate of photosynthesis of different algae. .The amount of oxygen $(C_{2})$ released was found to be maximum in blue and red absorption bands of chlorophyll.