Passage A
In recent years, proponents of "plant neurobiology" have argued that higher plants exhibit rudimentary cognitive capacities, including memory, learning, and purposeful communication. By observing rapid electrical signaling—action potential-like depolarizations propagating through vascular bundles—and volatile organic compound (VOC) emissions following herbivorous damage, researchers contend that plants possess decentralized processing networks functionally analogous to animal nervous systems. For instance, when Mimosa pudica is repeatedly subjected to non-threatening mechanical drops, it gradually ceases leaf-folding behavior. Advocates interpret this habituation as genuine learned behavioral plasticity mediated by physiological memory rather than simple metabolic exhaustion, suggesting that cognitive frameworks offer the most coherent paradigm for botanical signaling.
Passage B
While plants unquestionably possess sophisticated biochemical communication networks, attributing "cognition," "learning," or "neurobiology" to botanical organisms conflates physiological adaptation with mental representation. Plants lack specialized neurons, synaptic junctions, and centralized integrating organs; their systemic responses, such as VOC release or membrane potential shifts, are parsimoniously explained by modular enzymatic cascades and phenotypic plasticity selected through evolutionary pressures. The habituation-like phenomena observed in Mimosa, for example, can be fully accounted for by receptor desensitization and calcium ion channel kinetics. Re-labeling evolved molecular mechanisms with zoocentric cognitive terminology obscures the distinctive nature of plant physiology and risks replacing rigorous biophysical models with anthropomorphic metaphors.
Based on the paired passages above, match each claim or observed phenomenon on the left with its correct analytical role or perspective attribution on the right.
- The progressive reduction of leaf-folding in Mimosa pudica after repeated non-damaging mechanical stimulationAn empirical observation accepted as factual by both authors but interpreted under competing explanatory frameworks
- The interpretation that volatile organic compound emissions and electrical signaling represent functional equivalents of neural computationA core theoretical thesis advanced in Passage A to justify classifying plant signaling systems as rudimentary cognition
- The explanation that the cessation of defensive responses stems from cellular ion channel kinetics and receptor desensitizationA non-cognitive, biophysical mechanism proposed in Passage B to explain botanical habituation without positing learning
- The methodological warning that applying cognitive and neurobiological vocabulary to plants introduces misleading anthropomorphismAn overarching conceptual critique articulated in Passage B regarding the terminology used by plant neurobiology advocates