Question

Difficulty: MediumInferences and Implicit Meaning

In his 1789 landmark publication Genera Plantarum, French botanist Antoine Laurent de Jussieu sought to reform plant taxonomy by replacing the artificial system established by Carl Linnaeus half a century earlier. Whereas Linnaeus categorized flora almost exclusively by counting reproductive organs—a pragmatic heuristic that facilitated quick identification but often grouped structurally disparate families together—Jussieu advocated for a "natural method." His framework evaluated multiple morphological characters simultaneously, assigning variable weight to traits based on their physiological stability across generations. However, Jussieu’s insistence on holistic evaluation created significant practical hurdles for contemporary field botanists. Lacking standardized diagnostic keys for subterranean root structures and delicate floral anatomy, early collectors found Jussieu’s multi-variate system far less manageable in the field than Linnaeus’s mechanical numerical counting. Consequently, despite the theoretical superiority of Jussieu's natural classification, institutional herbariums throughout Western Europe continued to employ the Linnaean framework for administrative and instructional cataloging well into the nineteenth century.

Based on the passage, which of the following can be inferred regarding eighteenth-century field botanists using the Linnaean system of classification?

  1. They prioritized immediate diagnostic utility over theoretical accuracy when organizing their findings during field collection.Answer
  2. B
    They eventually developed standardized diagnostic tools that resolved the practical limitations of Jussieu’s multi-variate framework.
  3. C
    They rejected Jussieu’s methodology primarily because they believed Linnaeus’s single-trait focus was theoretically superior.
  4. D
    They exclusively cataloged plant species by analyzing complex subterranean root structures rather than reproductive organs.
  5. E
    They expressed intense hostility toward Jussieu for attempting to dismantle long-established herbarium administrative routines.

Answer

Eighteenth-century field botanists prioritized immediate diagnostic utility over theoretical accuracy when organizing their findings during field collection.
The passage contrasts Linnaeus's 'pragmatic heuristic' for 'quick identification' with Jussieu's 'theoretically superior' but field-impractical method. The fact that collectors continued using Linnaeus because Jussieu's method was 'far less manageable in the field' supports the inference that field botanists prioritized ease of practical diagnostic use over theoretical precision.

Step-by-Step Solution

1
Analyze the passage context regarding the Linnaean system versus Jussieu's system.
Linnaeus's system is described as a 'pragmatic heuristic' that enabled 'quick identification' through 'mechanical numerical counting', whereas Jussieu's system was 'theoretically superior' but 'far less manageable in the field.'
Understanding why field botanists preferred Linnaeus requires comparing the practical benefits of Linnaeus with the operational challenges of Jussieu.
2
Evaluate the implicit connection between botanists' choices and their priorities.
Because field collectors continued to rely on Linnaeus due to its manageable nature despite Jussieu's theoretical advantages, it can be validly inferred that practical diagnostic utility took precedence over theoretical precision in field conditions.
An inference must be strictly supported by the implicit logical relationships established in the text.

Key Concept

Drawing Valid Inferences from Passage Contrast and Functional Trade-offs
Estimated Time:1m 30s
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