Multiple Choice Questions

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A common biocontrol agent for the control of plant diseases is

  • Baculovirus

  • Bacillius thuringiensis

  • Glomus

  • Glomus


D.

Glomus

Trichoderma is a genus of fungi that is present in all soils, where they are the most prevalent culturable fungi. Many species in the genus can be characterised as opportunistic avirulent plant symbionts. Several strains of Trichoderma have been developed as biocontrol agents against the fungal disease of plants. The various mechanisms include antibiosis, parasitism inducing host-plant resistance and competition. Most biocontrol agents are from the species. T.harzianum, T. varied and T. hamatum. The biocontrol agent generally grows in its natural habitat on the root surface and so affects root disease in particular but can also be effective against the foliar disease.

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Which one of the following is not a biofertilizer

  • Rhizobium

  • Nostoc

  • Mycorrhiza

  • Mycorrhiza

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Ethanol is commercially produced through a particular species of 

  • Clostridium

  • Trichoderma

  • Aspergillus

  • Aspergillus

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The common nitrogen -fixer in paddy field is 

  • Rhizobium

  • Azopirillum

  • Oscillatoria

  • Oscillatoria

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The most common substrate used in distilleries for the production of ethanol is 

  • soya meal 

  • ground gram

  • molasses

  • molasses

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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
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A person likely to develop tetanus is immunised by administering

  • dead germs

  • preformed antibodies

  • wide spectrum antibiotics

  • wide spectrum antibiotics

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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

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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

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Which of the following is not used as a biopesticide?

  • Bacillus thuringiensis
  • Trichoderma harzianum

  • Nuclear Polyhedrosis virus (NPV)

  • Nuclear Polyhedrosis virus (NPV)

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