The first antibiotic penecillin was discovered by -
Virus infecting a bacterium is called -
Agar-Agar is byproduct of -
Crown gall disease of various plants is caused by:
Puccinia graminis is an example of:
Hair like appendages present. on the surface of most of Gram negative bacteria which helps them to attach to natural substrate are called:
Barberry is the alternate host for.......
Mycoplasma differs from bacteria in the absence of -
Lichen is an association between -
One of the following which will not grow on artificial nutrient medium-
Who undertook extensive studies on anthrax bacillus?
The ability to cause disease in various plants or animals or even micro-organisms is called -
If a wheat field is inoculated with bacterium rhizobium, the soil will become rich in-
Pure culture of bacteria were obtained by -
Who coined the term 'Viroid' ?
Bacteriophages are -
Cells of Mycoplasma are sensitive to -
Which one of the following is not a disease of mungbean?
Which one of the following disease is caused by phytoplasma?
In early blight of tomato, symptoms first appear on -
Sexual state of Phytophthora infestans consists of -
Roguing of plants is not effective in management of -
How much quantity of Agrimycin-100 is required to prepare ten litres of spray solution of 100 ppm concentration?
The diseases of which of the following groups are controlled by tridemorph fungicide?
Acervuli are produced on infected host surface by the fungus causing?
Sporangia cause secondary infection in-
Under anaerobic condition of certain soils the population of …...are dominated.
Sun light essential for ...........soil microorganisms.
Black leg or soft rot of potato is caused by -
Which was firstly discovered antibiotic in world…
Who discovered streptomycin (antibiotic)....
The........ is refers to the total above ground portions of plants as habitat for microorganisms.
Example of host specific or host selective toxins is/are
The example of mycotoxins which is caused human and animal illness is......
All the powdery mildew fungus are..........in nature
Appearance of tumors on tubers and dirty cauliflower like outgrowth on infected potato tuberous is characteristics symptoms of
Fungus, Fusarium oxysporium produces..
Browning of fruits is due to
Multiplication of bacteria is chiefly done by.....
Which is the bacterial disease of rice........
Causal organism of karnal bunt disease of wheat is….(vvi)
At the high soil moisture level which fungi is more prevalent to cause disease-
National Virology Institute is situated at........
Vector of cucumber mosaic virus (CMV) disease is….
Which is the example of fungicide.
Domestic quarantine is adopted against
Rust or white blister of crucifers is caused by...
Who is known as father of Wheat Rust disease in India?
Bengal famine (1943) is caused due to (vvi)
Iris famine (1845) is caused by fungus........