The red drop effect occurs due to decreased functioning of PS-II beyond 680 nm and when both PS-I and PS-II are functioning together there is an enhancement in quantum yield. In PS I the reaction centre chlorophyll a has an absorption peak at 700 nm.
Emerson's enhancement effect and red drop have been instrumental in the discovery of:
NEET UG 2016 — Botany Photosynthesis in Higher Plants
2016mcqhard
Emerson's enhancement effect and red drop have been instrumental in the discovery of:
Official previous-year question
Held on 30 Apr 2016 · Verified 9 Jul 2026.
Options
- A
Photophosphorylation and non - cyclic electron transport
- B
Two photosystems operating simultaneously
- C
Photophosphorylation and cyclic electron transport
- D
Oxidative phosphorylation
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