Agriculture Plant Pathology
Quiz 5
Previous Page Next Page
41) The bacteria that causes cancer & gummosis is:?
(A). Pseudomonas syringae
(B). A. tumefaciens
(C). X. campestris
(D). All of above
Correct Answer: Pseudomonas syringae
42) Exchange of genetic material in bacteria through conjugation is proved by?
(A). Avery, Mcleod and McCarty (1944)
(B). Robert Koch
(C). Tatum & Lelderberg (1947)
(D). H.G. Khurana
Correct Answer: Tatum & Lelderberg (1947)
43) Gram Negative bacterium are not stained by crystal violet dye because of
?
(A). More lipid content
(B). Less lipid content
(C). Both of the above
(D). None of these
Correct Answer :Both of the above
44) Number of ribosomes in a bacterial cell is:
(A). 1020
(B). 1002000
(C). 100200
(D). None of these
Correct Answer :None of these
45) Which of the following is an example of Amphitrichous form of bacterium?
(A). P. Fluorescens
(B). Nitrosomonas
(C). Proteus vulgaris
(D). All of the above
Correct Answer :Nitrosomonas
46)“Little leaf disease of bringal” is caused by:
(A). Ustilago
(B). Chlorobium
(C). Mycoplasma
(D). Albugo
Correct Answer :Mycoplasma
47)The CapSomers, in bacteriophage, consist of a number of protein subunits known
as:
(A). Polyhedron
(B). Protomers
(C). Virions
(D). All of the above
Correct Answer: Protomers
48) Father of phytobacteriology is ?
(A). Edward Jenner
(B). Robert koch
(C). E.F. smith
(D). Millardet
Correct Answer: E.F. smith
49) An Icosahedral phage with circular single stranded DNA is
?
(A). M13
(B). × 174
(C). d
(D). T2
Correct Answer : × 174
50)Initial adsorption of the phage to the receptor (in host cell) is reversible when:
(A). Only the tips of the tail filers attach first
(B). Only tail pins attach
(C). Tail tube attach
(D). All of the above
Correct Answer :Only the tips of the tail filers attach first
========================================================================================
 |
| 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 ...
Tag:- plant pathology question paper
No comments:
Post a Comment