NEET Test Series from KOTA - 10 Papers In MS WORD
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Microbes in Human Welfare
260008
Scirpophaga incertulus is an example of
1 Monophagus pest
2 Diphagus pest
3 Oligophagous pest
4 Polyphagus pest
Explanation:
A monophagus insect is restricted to a single food source. For example, Scirpophaga incertulas are yellow stem borer or rice yellow stem borer species of moth family that feeds on a single plant.
WB JEE-2009
Microbes in Human Welfare
260011
Bacillus thuringiensis is used to control
1 Bacterial pathogens
2 Fungal pathogens
3 Nematodes
4 Insect pests
Explanation:
Bacillus thuringiensis is used to control insect pests. Spores of this bacterium possess the insecticidal cry protein. Therefore, spores of this bacterium kill larvae of contain insects.
DUMET-2010
Microbes in Human Welfare
260012
Dragonflies play an important role because they:
1 are pollinating agent
2 feed entirely on mosquito adults and mosquito larva
3 add to silvan beauty
4 are vectors for disease carrying germs
Explanation:
Dragonflies play an important role because they feed entirely on mosquito adults and mosquito larva, which helps to control mosquito population. Dragonflies are used as biological agent as they prey upon mosquitoes. Dragon flies are used as biological agent as they prey upon mosquitoes. Biocontrol is the natural method of pest and pathogen control using biological agents i.e. Microbes and insects.
JIPMER-1999
Microbes in Human Welfare
260015
Trichoderma harzianum has proved a useful microorganism for
1 Bioremediation of contaminated soils
2 reclamation of wastelands
3 gene transfer in higher plants
4 biological control of soil-borne plant pathogens
Explanation:
Trichoderma harzianum is a fungus that is used as a biocontrol agent against a variety of soilborne plant pathogens. It works by competing with the pathogens for nutrients and space, and by producing enzymes that can break down the pathogens cell walls.
A monophagus insect is restricted to a single food source. For example, Scirpophaga incertulas are yellow stem borer or rice yellow stem borer species of moth family that feeds on a single plant.
WB JEE-2009
Microbes in Human Welfare
260011
Bacillus thuringiensis is used to control
1 Bacterial pathogens
2 Fungal pathogens
3 Nematodes
4 Insect pests
Explanation:
Bacillus thuringiensis is used to control insect pests. Spores of this bacterium possess the insecticidal cry protein. Therefore, spores of this bacterium kill larvae of contain insects.
DUMET-2010
Microbes in Human Welfare
260012
Dragonflies play an important role because they:
1 are pollinating agent
2 feed entirely on mosquito adults and mosquito larva
3 add to silvan beauty
4 are vectors for disease carrying germs
Explanation:
Dragonflies play an important role because they feed entirely on mosquito adults and mosquito larva, which helps to control mosquito population. Dragonflies are used as biological agent as they prey upon mosquitoes. Dragon flies are used as biological agent as they prey upon mosquitoes. Biocontrol is the natural method of pest and pathogen control using biological agents i.e. Microbes and insects.
JIPMER-1999
Microbes in Human Welfare
260015
Trichoderma harzianum has proved a useful microorganism for
1 Bioremediation of contaminated soils
2 reclamation of wastelands
3 gene transfer in higher plants
4 biological control of soil-borne plant pathogens
Explanation:
Trichoderma harzianum is a fungus that is used as a biocontrol agent against a variety of soilborne plant pathogens. It works by competing with the pathogens for nutrients and space, and by producing enzymes that can break down the pathogens cell walls.
A monophagus insect is restricted to a single food source. For example, Scirpophaga incertulas are yellow stem borer or rice yellow stem borer species of moth family that feeds on a single plant.
WB JEE-2009
Microbes in Human Welfare
260011
Bacillus thuringiensis is used to control
1 Bacterial pathogens
2 Fungal pathogens
3 Nematodes
4 Insect pests
Explanation:
Bacillus thuringiensis is used to control insect pests. Spores of this bacterium possess the insecticidal cry protein. Therefore, spores of this bacterium kill larvae of contain insects.
DUMET-2010
Microbes in Human Welfare
260012
Dragonflies play an important role because they:
1 are pollinating agent
2 feed entirely on mosquito adults and mosquito larva
3 add to silvan beauty
4 are vectors for disease carrying germs
Explanation:
Dragonflies play an important role because they feed entirely on mosquito adults and mosquito larva, which helps to control mosquito population. Dragonflies are used as biological agent as they prey upon mosquitoes. Dragon flies are used as biological agent as they prey upon mosquitoes. Biocontrol is the natural method of pest and pathogen control using biological agents i.e. Microbes and insects.
JIPMER-1999
Microbes in Human Welfare
260015
Trichoderma harzianum has proved a useful microorganism for
1 Bioremediation of contaminated soils
2 reclamation of wastelands
3 gene transfer in higher plants
4 biological control of soil-borne plant pathogens
Explanation:
Trichoderma harzianum is a fungus that is used as a biocontrol agent against a variety of soilborne plant pathogens. It works by competing with the pathogens for nutrients and space, and by producing enzymes that can break down the pathogens cell walls.
A monophagus insect is restricted to a single food source. For example, Scirpophaga incertulas are yellow stem borer or rice yellow stem borer species of moth family that feeds on a single plant.
WB JEE-2009
Microbes in Human Welfare
260011
Bacillus thuringiensis is used to control
1 Bacterial pathogens
2 Fungal pathogens
3 Nematodes
4 Insect pests
Explanation:
Bacillus thuringiensis is used to control insect pests. Spores of this bacterium possess the insecticidal cry protein. Therefore, spores of this bacterium kill larvae of contain insects.
DUMET-2010
Microbes in Human Welfare
260012
Dragonflies play an important role because they:
1 are pollinating agent
2 feed entirely on mosquito adults and mosquito larva
3 add to silvan beauty
4 are vectors for disease carrying germs
Explanation:
Dragonflies play an important role because they feed entirely on mosquito adults and mosquito larva, which helps to control mosquito population. Dragonflies are used as biological agent as they prey upon mosquitoes. Dragon flies are used as biological agent as they prey upon mosquitoes. Biocontrol is the natural method of pest and pathogen control using biological agents i.e. Microbes and insects.
JIPMER-1999
Microbes in Human Welfare
260015
Trichoderma harzianum has proved a useful microorganism for
1 Bioremediation of contaminated soils
2 reclamation of wastelands
3 gene transfer in higher plants
4 biological control of soil-borne plant pathogens
Explanation:
Trichoderma harzianum is a fungus that is used as a biocontrol agent against a variety of soilborne plant pathogens. It works by competing with the pathogens for nutrients and space, and by producing enzymes that can break down the pathogens cell walls.
