In this paper, we propose a new rapid method for testing the physiological state of an etiolated plant and its short wavelength (UV-C) photophysiological response. For this task we propose to use portable teraohmmeters with Faraday cages (chambers), capable of operating even in field conditions with a battery. With their help, by modifying the design of Faraday cages, it is possible to record the dynamics of growth and decay of plant impedance under various influences - from conventional dark etiolation to exposure to heat and cold in thermostated Faraday cages. In this way, the homeostasis and kinetics of plant adaptation to corresponding stimuli or environmental conditions can also be characterized. As a result of testing this installation, we recorded:

a) Fluctuations in the impedance of a fresh leaf - from self-oscillations to the onset of irreversible death processes

b) High impedance stability of a freshly picked leaf

c) Increase in sheet resistance to etiolation

d) Weak fluctuations - transient cycles of reactive decompensation with an amplitude an order of magnitude less than resistance fluctuations on the active sheet immediately after installing it on the stand drastic acceleration of impedance kinetics upon UV-C irradiation of a plant leaf in EPROM laser (254 nm; Hg line)