Agriculture Plant Pathology
Quiz 7
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61) Tobacco necrosis and tomato leaf curl are more conspicuous during:
(A) winters
(B) summers
(C) spring
(D) rainy season
Correct Answer :winters
62
Increase in the concentration of CO2 in soil inhibits the growth of:?
(A) Rhizoctonia solani
(B) Ophiobolus graminis
(C) Sclerotinia minor
(D) All of the above
Correct Answer :All of the above
63) Deficiency of nitrogen makes the plants:
(A) weaker
(B) slow growing & aging fast
(C) susceptible to pathogens
(D) All of above
Correct Answer :All of above
64) Abundance of which mineral in plant increase resistance to “wilt of
tomato”?
(A) Calcium
(B) Phosphorous
(C) Boron/बोरान
Both calcium & Phosphorous
(D) Both calcium & Phosphorous
Correct Answer :Both calcium & Phosphorous
65) Indicator plant for the diagnosis of Plum Pox Virus (PPV) and Prune Dwarf
Virus (PDV) is:
(A) Prunus tomentosa
(B) Papaver somnifera
(C) Babool
(D) All of above
Correct Answer :Prunus tomentosa
66) Serological techniques are based on the:
(A) specificity of antigenantibody interaction
(B) use of polyclonal antibody
(C) use of monoclonal antibody
(D) All of the above
Correct Answer :All of the above
67)In FAME analysis of identifying phytopathogenic bacteria, FAME are extracted in
a mixture of: ?
(A) nButanol & ether
(B) ether & hexane
(C) 70% Acetone & ethanol
(D) All of the above
Correct Answer :ether & hexane
68) The oligonucleotide probes that employ fluorochromes and quenchas and
fluoresce upon hybridization are known as
(A) Chimera
(B) Molecular Beacons
(C) Operon
(C) Replicon
(D) Correct Answer :Molecular Beacons
69) Which of the following is suitable for deletion of variation within pathogen
populations is: ?
(A) RAPD
(B) Molecular Beacons
(C) both RAPD & Molecular Beacons
(D) None of the above
Correct Answer :RAPD
70) Heat stable DNA polymerases used in PCR is:
(A) Taq
(B) Pfu
(C) Vent
(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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