Which scientist demonstrated that the tip of a coleoptile was responsible for the phototropic response?
Understand the Problem
The question is asking about the historical experiments related to the discovery of auxin, specifically focusing on which scientist demonstrated the role of the coleoptile tip in phototropic responses.
Answer
Charles Darwin
The final answer is Charles Darwin.
Answer for screen readers
The final answer is Charles Darwin.
More Information
Charles Darwin first demonstrated the importance of the coleoptile tip in perceiving the phototropic light stimulus, showing that phototropic bending occurs due to signals from the tip of the coleoptile.
Tips
A common mistake is attributing the discovery solely to later researchers like Peter Boysen-Jensen, who further explored the mechanism involving chemical signals.
Sources
- Phototropism: Some History, Some Puzzles, and a Look Ahead - PMC - pmc.ncbi.nlm.nih.gov
- Darwin's experiments and phototropism - American Journal of Botany - bsapubs.onlinelibrary.wiley.com
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