Question

Emerson effect explain the phenomenon of

• A. Transpiration
• B. Absorption of water by roots
• C. Photosynthesis
• D. Respiration

Answer 1

The correct option is C Photosynthesis

The Emerson observed the effect on the rate of photosynthesis with a variable range of frequency. The rate of photosynthesis increased after chloroplasts are exposed to the light of wavelength 670 nm (far-red light) and 700 nm (red light). When simultaneously exposed to the light of both wavelengths, the rate of photosynthesis is far higher than the sum of the red light and far red light photosynthesis rates.

So, the correct answer is option C.