Can plants feel pain?

The answer

While plants lack nervous systems and cannot feel pain as animals do, a 2019 study in Cell found that stressed plants emit ultrasonic clicks between 20 and 100 kilohertz, well above human hearing range. Tobacco plants made about 35 sounds per hour when deprived of water, while unstressed plants were nearly silent. These acoustic signals may convey information to nearby organisms, though plants process these stimuli through biochemical pathways rather than conscious experience.