Agriculture Plant Pathology
Quiz 8
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71) Techniques used for sampling of air borne pathogen is
?
(A) Tilak Sampler
(B) Setting plate
(C) Burkard spore trap
(D) All of the above
Correct Answer :All of the above
72)Chitin and ergosterol, if present in the plants, are indicative of which pathogen
?
(A) RLOs
(B) Bacterial
(C) Fungal
(D) Phytoplasma
Correct Answer :Fungal
73) Measure of the degree of infection (in plants) is known as
?
(A) Disease incidence
(B) disease severity
(C) Perennation
(D) All of above
Correct Answer :disease severity
74) Equation used in critical point model to relate yield to disease assessment in
plant is:
(A) L=cx
(B) L= b1×1 + b2 ×2 +bn Xn
(C) Both the above
(D) None of the above
Correct Answer :L=cx
75) The interaction of four components, to develop a disease in plants can be
visualized in:
(A) Disease tetrahedron
(B) Disease pyramid
(C) Both the above
(D) None of the above
Correct Answer :Both the above
76) Tardive epidemics occur when the pathogen are:
(A) non systemic
(B) systemic to varying extent
(C) Both the above
(D) None of the above
Correct Answer :non systemic
77) The first computer simulation programme to simulate early blight, epidemics of
tomato & potato was:
(A) EPIVEN
(B) EPIDMIC
(C) EPIDEM
(D) MYCOS
Correct Answer :EPIDEM
78) The likelihood of epidemics can be reduced by going with _____:
(A) Multiline varieties
(B) Mixture of distinct varieties
(C) Both the above
(D) None of the above
Correct Answer :Both the above
79) Plasma gene mutation is absent in which plant pathogen?
(A) Mucor
(B) TMV
(C) Aspergillus
(D) Phytoplasma
Correct Answer :TMV
80) Heterokaryosis in plant pathogenic fungi is due to:
(A) Anastomosis
(B) mutation
(C) diploidization
(D) All of the above
Correct Answer :All of the above
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| Plant Pathology |
What is plant pathology?
Plant Pathology is defined as the study of the organisms and environmental conditions that cause disease in plants, the mechanisms by which this occurs, the interactions between these causal agents and the plant (effects on plant growth, yield and quality), and the methods of managing or controlling plant disease. It also interfaces knowledge from other scientific fields such as mycology, microbiology, virology, biochemistry, bioinformatics, etc. More ...
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