The common nitrogen -fixer in paddy field is
Rhizobium
Azopirillum
Oscillatoria
Oscillatoria
B.
Azopirillum
Azopirillum is a nitrogen-fixing bacterium in paddy fields. It is very useful soil and root bacterium. It is an associative symbiotic N2 -fixing bacteria. When it is added to the soil, it multiplies in millions and can supply 20-40 kg of nitrogen per hectare per season. It also produces growth promoting substance like Indole Acetic acid (IAA). Gibberellins and promotes root proliferation. These substances improve the plant growth and yield.
A common biocontrol agent for the control of plant diseases is
Baculovirus
Bacillius thuringiensis
Glomus
Glomus
Read the following statement having two blanks (1 and 2).
A drug used for ..... (1) ...... patients is obtained from a species of the organism ....... (2).....The one correct option for the two blanks is.
|
Blank – 1
|
Blank – 2
|
|
Heart
|
Penicillium
|
|
Blank – 1 |
Blank – 2 |
|
Organ - transplant |
Trichoderma |
|
Blank – 1 |
Blank – 2 |
|
Swine flu |
Monascus |
|
Blank – 1 |
Blank – 2 |
|
Swine flu |
Monascus |
Which of the following is not used as a biopesticide?
Trichoderma harzianum
Nuclear Polyhedrosis virus (NPV)
Nuclear Polyhedrosis virus (NPV)
The most common substrate used in distilleries for the production of ethanol is
soya meal
ground gram
molasses
molasses
Biochemical Oxygen Demand (BOD) in a river water
remains unchanged when algal bloom occurs
has no relationship with the concentration of oxygen in the water
gives a measure of Salmonella in the water
gives a measure of Salmonella in the water
Ethanol is commercially produced through a particular species of
Clostridium
Trichoderma
Aspergillus
Aspergillus
Which one of the following option gives the correct matching of a disease with its causative organism and mode of infection?
|
Disease |
Gausative Organisms |
Mode of infection |
|
Typhoid |
Salmonella typhi |
With inspired air |
|
Disease |
Gausative Organisms |
Mode of infection |
|
Pneumonia |
Sreptococcus pneumoniae |
Droplet infection |
|
Disease |
Gausative Organisms |
Mode of infection |
|
Elephantiasis |
Wuchereria bancrofti |
Infected water and food |
|
Disease |
Gausative Organisms |
Mode of infection |
|
Elephantiasis |
Wuchereria bancrofti |
Infected water and food |
A person likely to develop tetanus is immunised by administering
dead germs
preformed antibodies
wide spectrum antibiotics
wide spectrum antibiotics
