Question

2
This is a disease triangle. What does it signify? What are the other ways by which communicable
diseases spread?
​

Answer 1

Answer:

The disease triangle  is one of the first concepts encountered by college students in an introductory plant pathology course  and often may be re-encountered in higher level classes as a fundamental principle of the factors involved in disease causation. Thus, the figure illustrates one of the paradigms in plant pathology; that is, the existence of a disease caused by a biotic agent absolutely requires the interaction of a susceptible host, a virulent pathogen, and an environment favorable for disease development . Conversely, plant disease is prevented upon elimination of any one of these three causal components.

This triangular relationship is unique to phytopathology in comparison to veterinary and medical sciences because terrestrial plants possess little thermal storage capacity and their immobility precludes escape from an inhospitable environment. The sophisticated immune system found in mammals is absent in plants, and this places an emphasis on the host's genetic constitution. Finally, the predominance in phytopathology of fungi, which are also highly dependent on environment, may have contributed to the development of this paradigm.

Explanation: I HOPE THIS ANSWER HELPS YOU!!!!!