Plants are not passive
Plants detect light direction, gravity, water, touch, nutrients, pathogens and neighbours. Hormonal, electrical and chemical signalling coordinates responses across tissues without a nervous system.
Why “intelligence” enters the debate
Learning-like effects, resource allocation, signalling and adaptive growth can resemble functions called intelligent in animals or algorithms. Some researchers use a broad functional definition of intelligence to describe this flexibility.
The consciousness leap is much larger
Claims that plants feel pain, possess subjective awareness or have neuron-like cognition remain controversial. Critical reviews argue that known plant physiology explains the observations without requiring consciousness.
A better question
Instead of asking whether plants are secretly animals, research can ask what computations distributed living systems perform, how memory-like states are stored and how evolution builds adaptive control without brains.
Research record
Taiz et al. — Plants Neither Possess nor Require ConsciousnessPeer-reviewed · open sourcePubMed record — Plants Neither Possess nor Require ConsciousnessBiomedical index · open sourceNature (2024) — debate over plant intelligenceScientific commentary · open sourceDo Plants Think?
Direct answer: Plants process information and behave adaptively. There is no robust evidence that they think or feel in the animal-consciousness sense.
Sophisticated signalling: established. Broad functional “intelligence”: definition-dependent. Subjective plant consciousness: unsupported by current evidence.