Question

Two pathways of photophosphorylation i.e., cyclic and non-cyclic were suggested by .................

• A. Robert Hill
• B. Dr. Calvin
• C. Dr. Arnon
• D. C. Van Neil

Hint:

Dr. Arnon is credited with the discovery of the two pathways of photophosphorylation: cyclic and non-cyclic.

Answer 1

The Correct Option is C

Step 1: Understanding photophosphorylation.
Photophosphorylation refers to the process of generating ATP from light energy during photosynthesis. There are two types: cyclic and non-cyclic, and Dr. Arnon proposed the two pathways of photophosphorylation.
Step 2: Analyzing the options.
(A) Robert Hill: Robert Hill is known for his work on the Hill reaction, which is related to the light-dependent reactions of photosynthesis but not the two pathways of photophosphorylation.
(B) Dr. Calvin: Dr. Calvin is famous for his discovery of the Calvin cycle, but he did not suggest the two pathways of photophosphorylation.
(C) Dr. Arnon: Correct — Dr. Arnon proposed the two pathways of photophosphorylation, cyclic and non-cyclic.
(D) C. Van Neil: C. Van Neil contributed to photosynthesis research but did not propose the two pathways of photophosphorylation.
Step 3: Conclusion.
The correct answer is (C) Dr. Arnon, as he suggested the two pathways of photophosphorylation.