Human physiology seeks to apprehend the mechanisms that work to maintain the human frame alive and functioning, via clinical enquiry into the character of mechanical, physical, and biochemical features of humans, their organs, and the cells of which they are composed. The major stage of awareness of physiology is at the level of organs and systems within structures. The endocrine and nervous systems play principal roles in the reception and transmission of alerts that integrate function in animals. Homeostasis is a most important factor with regard to such interactions within plant life as well as animals. The organic basis of the examine of body structure, integration refers back to the overlap of many functions of the systems of the human body, in addition to its observed form. It is achieved through verbal exchange that occurs in a number of ways, both electric and chemical. Plant body structure is a subdiscipline of botany worried with the functioning of flora. Closely related fields consist of plant morphology, plant ecology, phytochemistry, mobile biology, genetics, biophysics, and molecular biology. Fundamental processes of plant body structure consist of photosynthesis, respiration, plant nutrition, tropisms, nastic movements, photoperiodism, photomorphogenesis, circadian rhythms, seed germination, dormancy, and stomata feature and transpiration. Absorption of water by roots, production of food inside the leaves, and growth of shoots towards mild are examples of plant physiology.