Who was the famous scientist that based a lot of his pivotal conclusions on his observations of orchids

Question

BlackTom AI · Accepted Answer

Charles Darwin's detailed study of orchids provided striking evidence for natural selection and coevolution.

1. Relevant knowledge points and concepts
- Natural selection: differential survival/reproduction leading to adaptation.
- Coevolution: reciprocal evolutionary change between interacting species (flowers and pollinators).
- Floral morphology and pollination biology: specialized structures in orchids that promote cross-pollination and match pollinator anatomy.
- Historical works: Darwin’s 1862 book On the Various Contrivances by which British and Foreign Orchids are Fertilised by Insects.

2. Step-by-step reasoning process
- Darwin examined many orchid species and documented complex floral structures (e.g., hinged lips, tubes, viscidia) that ensure pollen transfer.
- He argued these features are adaptations shaped by selection to favor cross-fertilization by specific insects.
- He used predictive logic: for example, the long nectar spur of Angraecum sesquipedale led him to predict a pollinating moth with an equally long proboscis.
- Subsequent discovery of such a moth (Xanthopan morganii praedicta) supported his prediction and thus his broader evolutionary arguments.

3. Intermediate steps (no numerical calculation)
- Observation: specialized orchid structures.
- Hypothesis: structures evolved to match pollinator anatomy (coevolution).
- Prediction: existence of pollinators adapted to those structures.
- Empirical confirmation: discovery of matching pollinator species.

4. Why the correct answer is correct
Darwin explicitly based pivotal conclusions about adaptation and natural selection on his orchid observations and wrote a monograph showing how orchid morphology is explained by evolutionary processes. His orchid work is historically cited as a clear example of natural selection producing complex functional traits.

5. Why other options are incorrect
- Gregor Mendel: famous for pea-plant experiments establishing genetic inheritance, not orchid-based conclusions.
- Robert Flannery: not known as the historical scientist who drew pivotal conclusions from orchids.
- Heiner Lieth: a contemporary ecologist/vegetation modeller, not the 19th-century scientist associated with orchid-based evidence for evolution.

6. Conclusion
The correct answer is Charles Darwin, which matches the provided answer.

Who was the famous scientist that based a lot of his pivotal conclusions on his observations of orchids单项选择题

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