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