List of top Plant Sciences Questions on Plant Pathology

Arrange the following events in the correct order
(A). Restoration of Effector Triggered Susceptibility by Pathogen
(B). Effector triggered susceptibility by Pathogen
(C). Effector triggered immunity by Plant
(D). PAMP triggered immunity by Plant

Given below are two statements, one is labelled as Assertion (A) and other labelled as Reason (R).
Assertion (A): Viruses are molecular parasites.
Reason (R): Viruses depend on host for their basic functions like replication.
In light of the above statements, choose the correct answer from the options given below.

Arrange the following organisms in ascending order of their genomic complexities
(A). Viroid
(B). Virus
(C). Phytoplasma
(D). Bacteria

Match List-I with List-II
List-I (Biocompound):
(A). 2, 4-diacetyl-phloroglucinol
(B). Herbicolin
(C). Zwittermicin A
(D). Xanthobaccin A
List-II (Organism):
(I). Pseudomonas fluorescens
(II). Pantoea agglomerans
(III). Bacillus cereus
(IV). Lysobacter sp.

Match List-I with List-II
List-I (Component of microscope):
(A). Turret in a microscope
(B). Condenser in a microscope
(C). Arm of a microscope
(D). Ocular lens
List-II (Description):
(I). Lever beneath the opening in the stage consists of a shutter-like group of metal leaves which regulate the amount of light coming through the slide on the stage
(II). Revolving plate which bears the objective lens, attached at the lower end of the tube, can be turned to change the objective lens
(III). Short metal tube that contains a lens that fits into the top of the tube
(IV). Nearly C-shaped pillar arising from the base that supports the stage and ocular components

Arrange the following components in chronological order of their development during infection
(A). Spore
(B). Appressorium
(C). Infection Hypha
(D). Germtube

Which of the following was responsible for the extinction of the Banana Variety "Gros Michel" from the market due to its high susceptibility?

Choose the correct option about Magnaporthe
A. Magnaporthe affects only monocots
B. Magnaporthe affects only dicots
C. Magnaporthe is seed-borne
D. Magnaporthe is non motile

Which of the following is known to cause abnormal and unlimited proliferation of plant cells?

Match List-I with List-II

List-I (Name of crop diseases) & List-II (Name of the crops)
(A) Tikka disease & (IV) Groundnut
(B) Stripe rust & (III) Wheat
(C) Neck blast & (I) Rice
(D) Fusarium wilt & (II) Pigeonpea

According to Koch’s first postulate

Given below are two statements :
Statement (I) : Transboundary pathogen triggered plant disease epidemics is responsible for famine in Europe in 19th century.
Statement (II) : Invasive pathogens are highly aggressive.
In light of the above statements, choose the most appropriate answer from the options given below.

Given below are two statements, one is labelled as Assertion (A) and other one labelled as Reason (R).
Assertion (A) : Bacterial phytopathogen do cause explosive epidemics.
Reason (R) : Bacterial phytopathogens have short generation time by binary fission.
In light of the above statements, choose the correct answer from the options given below.

Given below are two statements, one is labelled as Assertion (A) and other one labelled as Reason (R).
Assertion (A) : Only vegetatively propagated planting are responsible for transboundary movement of pathogens.
Reason (R) : High moisture contents in the vegetative propagation material supports pathogen viability.
In light of the above statements, choose the correct answer from the options given below.

Given below are two statements :
Statement (I) : Pathological wilt is usually irreversible leading to the death of plants.
Statement (II) : Physiogical wilt too is reversible prior to the permanent wilting point.
In light of the above statements, choose the most appropriate answer from the options given below.

Given below are two statements :
Statement (I) : RNA is the only genetic element in plant viruses.
Statement (II) : RNA viruses are known to cause crop losses.
In light of the above statements, choose the most appropriate answer from the options given below.

Choose the correct answer from the options given below:
(A) Ralstonia causes wilt disease
(B) Fusarium causes wilt disease
(C) Verticillium causes wilt disease
(D) Pseudomonas causes wilt disease

Choose the correct answer from the options given below:
(A) Certain plant viruses are vectored by insect
(B) Certain plant viruses are transmitted by mechanical means
(C) No plant viruses are vectored by fungi
(D) No plant viruses are vectored by nematodes

Choose the correct answer from the options given below:
(A) Magnaporthe is a pathogen on dicot only
(B) Puccinia is a pathogen on monocot only
(C) Ralstonia is a pathogen on dicot and monocot
(D) RNA virus is a pathogen on dicot and monocot only

Match List-I with List-II
{|p{7cm}|p{7cm}|} List-I (Book) & List-II (Author)
(A) Plant Pathology and Plant Pathogens & (I) John A. Lucas
(B) Fundamentals of Plant Pathology & (II) R.S. Mehrotra
(C) Essential Plant Pathology & (III) Gail L. Schumann AND Cleora J. D'Arcy
(D) Basic Plant Pathology Methods & (IV) James B. Sinclair AND Onkar Dev Dhingra

Match List-I with List-II
{|p{7cm}|p{7cm}|} List-I (Characteristic) & List-II (Organism)
(A) Flagella & (I) Viruses
(B) Dark Conidia & (II) Bacteria
(C) Short generation time & (III) Puccinia
(D) Intracellular movement & (IV) Oomycetes

Polycyclic diseases are characterized by __________.
(A) Air borne nature
(B) Foliar infection
(C) Multiplicity of infection
(D) Short generation time
Choose the correct answer from the options given below :

Match List-I with List-II
{|p{7cm}|p{7cm}|} List-I (Theory proposed/Characteristic) & List-II (Author/Thinker)
(A) Gene for Gene & (I) H.H. Flor
(B) Germ Theory & (II) Anton de Bary
(C) Puccinia path & (III) K.C. Mehta
(D) Elicitor & (IV) Noel T Keen