Plant Pathology MCQ E-Books Download
- What does the term ‘phytopathology’ mean?
- A. Study of plant physiology
- B. Study of plant diseases
- C. Study of soil nutrients
- D. Study of plant genetics
Answer: B
- Which of the following is NOT a major objective of plant pathology?
- A. Study of biotic causes of diseases
- B. Study of the mechanisms of disease resistance in humans
- C. Study of host-pathogen interaction
- D. Development of disease management methods
Answer: B
- What is a symptom in plant pathology?
- A. The external or internal visible effect of a disease
- B. A type of pathogen causing the disease
- C. A natural growth stage of a plant
- D. The absence of pathogens
Answer: A
- Which ancient text first discussed the classification of plant diseases and germ theory?
- A. Bible
- B. Rigveda
- C. Theophrastus’ “Enquiry into Plants”
- D. Agnipuran
Answer: B
- What book written by Surapal contains information about plant diseases?
- A. Artha Shashtra
- B. Vraksha Ayurveda
- C. Sushruta Samhita
- D. Vishnu Puran
Answer: B
- What does the Federation of British Plant Pathologists define disease as?
- A. A spontaneous malfunction in plants
- B. A harmful deviation from normal physiological functioning
- C. A disturbance caused by biotic or abiotic agents
- D. An irreversible natural process
Answer: B
- Who is considered the first to study plant diseases scientifically?
- A. Aristotle
- B. Theophrastus
- C. Hippocrates
- D. Surapal
Answer: B
- What is the origin of the term ‘phytopathology’?
- A. Latin
- B. Sanskrit
- C. Greek
- D. Hebrew
Answer: C
- Which plant disease is NOT mentioned in the Bible?
- A. Rust
- B. Blight
- C. Downy mildew
- D. Bacterial wilt
Answer: D
- Which ancient Indian text is known to provide the first detailed information on plant diseases?
- A. Agnipuran
- B. Rigveda
- C. Vraksha Ayurveda
- D. Atharvanaveda
Answer: C
- Plant diseases are recognized by the ______ they produce.
- A. Causes
- B. Pathogens
- C. Symptoms
- D. Germs
Answer: C
- Which statement about Theophrastus is true?
- A. He conducted experiments to study plant diseases.
- B. He believed plant diseases were caused by external agents.
- C. He wrote ‘Enquiry into Plants’ based on observations.
- D. He introduced the germ theory of disease.
Answer: C
- What does the term “mesobiotic” refer to in plant pathology?
- A. Abiotic factors
- B. Non-living entities
- C. Entities between living and non-living
- D. Environmental influences
Answer: C
- Which society accepts the definition of plant disease as a “malfunctioning process caused by continuous irritation”?
- A. Indian Phytopathological Society
- B. British Mycological Society
- C. Federation of British Plant Pathologists
- D. American Phytopathological Society
Answer: D
- What did Surapal classify plant diseases into?
- A. Fungal and bacterial
- B. Biotic and abiotic
- C. Internal and external
- D. Chronic and acute
Answer: C
- Which of the following is NOT a component of the disease triangle in plant pathology?
- A. Host
- B. Parasite
- C. Soil nutrient
- D. Environment
Answer: C
- What is a “biotic cause” in plant pathology?
- A. Disease caused by physical damage
- B. Disease caused by living organisms
- C. Disease caused by abiotic factors
- D. Disease caused by soil pH imbalance
Answer: B
- Theophrastus believed that plant diseases were:
- A. Caused by germs
- B. Autonomous or spontaneous
- C. Spread by insects
- D. Caused by supernatural forces
Answer: B
- Which branch of science is NOT directly related to plant pathology?
- A. Physics
- B. Chemistry
- C. Psychology
- D. Genetics
Answer: C
- The term “plant pathology” is derived from which language?
- A. Latin
- B. Greek
- C. Sanskrit
- D. Old English
Answer: B
MCQs on Mycology (Questions 21–40)
- Who developed the first microscope in 1675?
- A. Robert Koch
- B. Anton von Leeuwenhoek
- C. Louis Pasteur
- D. J. G. Kuhn
Answer: B
- Who is known as the Father of Mycology?
- A. E. M. Fries
- B. P. A. Micheli
- C. Robert Hartig
- D. Anton de Bary
Answer: B
- Who published a paper on bunt or stinking smut of wheat in 1755?
- A. Tillet
- B. Prevost
- C. Micheli
- D. Eriksson
Answer: A
- Who first provided evidence that bunt of wheat is caused by a fungus?
- A. H. M. Ward
- B. I. B. Prevost
- C. Tillet
- D. M. S. Woronin
Answer: B
- Which publication is considered the foundation for naming fungi?
- A. Vraksha Ayurveda
- B. Diseases of Trees
- C. Systema Mycologicum
- D. Enquiry into Plants
Answer: C
- What major event was caused by Phytophthora infestans in 1845?
- A. Irish Potato Famine
- B. Great Bengal Famine
- C. Introduction of Bordeaux mixture
- D. Discovery of Penicillin
Answer: A
- Who is regarded as the Father of Modern Plant Pathology?
- A. Anton de Bary
- B. Robert Hartig
- C. H. M. Ward
- D. E. C. Stakman
Answer: A
- What year did Anton de Bary prove that Phytophthora infestans causes potato late blight?
- A. 1845
- B. 1861
- C. 1865
- D. 1874
Answer: B
- Who discovered the Bordeaux mixture in 1885?
- A. Robert Hartig
- B. Pierre Marie Alexis Millardet
- C. H. M. Ward
- D. Eriksson
Answer: B
- Which pathogen caused the Great Bengal Famine in 1943?
- A. Phytophthora infestans
- B. Helminthosporium oryzae
- C. Puccinia graminis
- D. Plasmodiophora brassicae
Answer: B
- Who is called the Father of Forest Pathology?
- A. H. M. Ward
- B. Robert Hartig
- C. E. M. Fries
- D. Anton de Bary
Answer: B
- What is the significance of the year 1869 in Mycology?
- A. Coffee rust devastated England’s coffee production.
- B. Downy mildew introduced to Europe.
- C. Sulphur used for peach mildew.
- D. Bordeaux mixture discovered.
Answer: A
- Who defined and named mycorrhizal associations in plant roots?
- A. A. B. Frank
- B. E. M. Fries
- C. W. A. Orton
- D. J. G. Kuhn
Answer: A
- Which scientist is associated with physiologic races of cereal rust fungus in 1894?
- A. Eriksson
- B. Robert Hartig
- C. A. B. Frank
- D. H. N. Hansen
Answer: A
- Who demonstrated parasexualism in fungi in 1953?
- A. E. M. Fries
- B. Pontecorvo and associates
- C. H. N. Hansen
- D. J. G. Horsfall
Answer: B
- Which hypothesis was developed by H. H. Flor in 1942?
- A. Toxin theory
- B. Gene-for-gene hypothesis
- C. Vertical resistance theory
- D. Horizontal resistance theory
Answer: B
- Who began the journal Review of Applied Mycology?
- A. E. J. Butler
- B. H. H. Flor
- C. M. S. Woronin
- D. E. A. Gaümann
Answer: A
- What year did Sir Alexander Fleming isolate penicillin?
- A. 1920
- B. 1929
- C. 1934
- D. 1938
Answer: B
- Who introduced the concept of systemic fungicides?
- A. van Schmeling and Kulka
- B. H. N. Hansen
- C. R. H. Biffen
- D. J. G. Horsfall
Answer: A
- Who is known as the Father of Tropical Plant Pathology?
- A. H. M. Ward
- B. Robert Hartig
- C. E. J. Butler
- D. E. M. Fries
Answer: A
MCQs on Plant Virology (Questions 41–50)
- Who described the disease of tobacco called mosaikkranheit in 1886?
- A. Dimitri Ivanowski
- B. Adolf Mayer
- C. M. W. Beijerinck
- D. W. M. Stanley
Answer: B
- Which scientist demonstrated that the causal agent of tobacco mosaic could pass through bacterial filters in 1892?
- A. E. F. Smith
- B. Dimitri Ivanowski
- C. M. W. Beijerinck
- D. Adolf Mayer
Answer: B
- Who first used the term “virus” and believed it to be contagium vivum fluidum?
- A. W. M. Stanley
- B. Dimitri Ivanowski
- C. M. W. Beijerinck
- D. F. C. Bawden
Answer: C
- What tool did F. O. Holmes provide in 1929 for measuring viruses?
- A. Crystal formation method
- B. Electron microscope
- C. Local lesion assay
- D. Virus isolation techniques
Answer: C
- Who proved that viruses can be crystallized and won the Nobel Prize in 1946?
- A. F. C. Bawden
- B. W. M. Stanley
- C. Dimitri Ivanowski
- D. Gierer and Schramm
Answer: B
- What did F. C. Bawden and N. W. Pirie discover in 1936 about the crystalline nature of viruses?
- A. They consist of protein only
- B. They contain nucleic acid and protein
- C. They are entirely composed of RNA
- D. They can pass through bacterial filters
Answer: B
- Who first observed the TMV virus particles using an electron microscope?
- A. M. W. Beijerinck
- B. Kausche and colleagues
- C. Gierer and Schramm
- D. T. O. Diener
Answer: B
- What discovery by Gierer and Schramm in 1956 advanced our understanding of viral infection?
- A. Satellite viruses
- B. Viroids
- C. Nucleic acid is the infectious agent of viruses
- D. TMV mutation induction
Answer: C
- What are viroids, discovered by T. O. Diener in 1971?
- A. Satellite viruses causing crop diseases
- B. Helical microorganisms with walls
- C. Infectious RNA molecules smaller than viruses
- D. Mutated forms of Tobacco Mosaic Virus
Answer: C
- What significant discovery was made by Davies et al. in 1972 related to corn stunt disease?
- A. Satellite viruses
- B. Mycoplasmalike organisms
- C. Spiroplasma
- D. Viroids
Answer: C
MCQs on Plant Pathology Definition and History