This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Researches on Irritability of Plants fig. . en Figure in book Researches on Irritability of Plantsbr Abolition of motile excitability of pulvinus by absorption of water Note prolongation of period of recovery and ineffectiveness of stimuli applied at moments marked with thick dots Subsequent restoration of excitability by application