Mycology MCQs (Quiz 17) Posted on July 8, 2026Author agropublishers 0 1. In plant pathology, synergism refers to a situation in which tow pathogens ___________ Cause no disease when present together Benefit each other without affecting the host Have no interaction with one another Together cause greater disease severity than either pathogen alone 2. Serological methods used for the detection of plant viruses primarily identify viral ________________ Host ribosomes Capsid protein Nucleoprotein Nucleic acid 3. Disease resistance in plant pathology is primarily a characteristic of the ___________ Pathogen Pathogen and host equally Host plant Environment 4. Plant galls are abnormal growths resulting from __________________ Mineral deficiency Water deficiency Natural aging Abnormal cell growth induced by other organisms 5. Plant galls can be induced by which of the following organisms? All of these Nematodes Bacteria Viruses 6. The powdery mildew pathogen of mango primarily survives between growing seasons in ______________ Mango plant debris Dead twigs of mango Alternate hosts Living twigs and dormant tissues of mango 7. Tobacco Mosaic Virus (TMV) is capable of surviving for many years in infected plant debris and contaminated materials primarily because it __________________ Is stable under all environmental conditions Is resistant to all disinfectants Was the first virus to be discovered Has a high thermal inactivation point and exceptional stability 8. The virulence of a plant pathogen is primarily determined by its ______________________ Environmental conditions alone Genes of the host plant Genetic makeup of pathogen Combination of environmental factors 9. Downy mildew diseases derive their name from the characteristic __________________ Downy, cotton-like growth of the pathogen on infected plant surfaces Development of the pathogen exclusively on roots Development of symptoms only on the lower surface of leaves Occurrence only on the lower leaves of plants 10. _________________ is a fungal infection of the outer ear caused by Aspergillus Otomycosis Tuberculosis Tetanus Cholera Loading … Question 1 of 10
