Q765
Photosynthetic enhancement with flashing light was first observed by
A.
Benson and Calvin
B.
Hill and Calvin
C.
Hatch and Slack
D.
Emerson and Arnold
AnswerAnswer: Option D
Solution
Answer: Option D
Solution:
Photosynthetic enhancement with flashing light was first observed by Emerson and Arnold.Emerson and William Arnold found that "the yield per flash reached a maximum when just 1 out of 2500 chlorophylls absorbed a quantum".
Next, in 1939, Emerson demonstrated that between 8 and 12 quanta of light were needed to produce one molecule of oxygen. Thus, changes in flashing light lead to enhancement in the photosynthesis process.