Plant physiology is a subdiscipline of organic science worried about the working, or physiology, of plants.Closely related fields incorporate plant morphology (structure of plants), plant nature (collaborations with the earth), phytochemistry (natural chemistry of plants), cell science, hereditary qualities, biophysics and atomic science.

Major procedures, for example, photosynthesis, breath, plant sustenance, plant hormone capacities, tropisms, nastic developments, photoperiodism, photomorphogenesis, circadian rhythms, ecological pressure physiology, seed germination, torpidity and stomata capacity and transpiration, the two pieces of plant water relations, are concentrated by plant physiologists.

The field of plant physiology incorporates the investigation of all the inner exercises of plants—those synthetic and physical procedures related with life as they happen in plants. This incorporates learn at numerous degrees of size of size and time. At the littlest scale are atomic communications of photosynthesis and inside dissemination of water, minerals, and supplements. At the biggest scale are the procedures of plant advancement, irregularity, lethargy, and regenerative control. Major subdisciplines of plant physiology incorporate phytochemistry (the investigation of the natural chemistry of plants) and phytopathology (the investigation of malady in plants). The extent of plant physiology as an order might be separated into a few significant zones of examination.