260053
BGA (blue-green algae) is chiefly used as biofertilizer in the crop of:
1 Wheat
2 Gram
3 Paddy
4 Mustard
Explanation:
Blue-green algae (BGA) is chiefly used as biofertilizer in paddy fields. - Blue-green algae are autotrophic microbes widely distributed in aquatic and terrestrial environments many of which can fix atmospheric nitrogen, e.g. Anabaena, Nostoc etc.
Haryana PMT-1999
Microbes in Human Welfare
260054
Which of the following is a biofertilizer?
1 Funaria
2 Fern
3 Anabaena
4 Fungus
Explanation:
Biofertilizers are organisms that enrich the nutrient quality of the soil. The main sources of biofertilizers are bacteria, cyanobacteria and fungi. - Cyanobacteria e.g. Anabaena, Nostoc fix atmospheric nitrogen thus enriching the soil fertility. Hence, these organisms are used as biofertilizers.
CG PMT-2006 / JIPMER-2006
Microbes in Human Welfare
260058
Bacillus thuringiensis is a soil bacterium that produces a $\qquad$ with insecticidal properties.
1 Polysaccharide
2 Hormone
3 Protein
4 Lipid
Explanation:
Soil bacterium Bacillus thuringiensis produces proteins that kill certain insects like lepidopterans, coleopterans and dipterans (flies, mosquitoes). - Bacteria produce protein crystals containing inactive toxin. Hence these toxins do not harm the bacteria, but kill insects when they ingest plant parts expressing them. Alkaline $\mathrm{pH}$ of alimentary canal of insect solubilize the crystal and converts inactive protoxins into active toxins.
MHT CET-07.10.2020 Shift-I
Microbes in Human Welfare
260059
Azolla is used as bio-fertilizer as it has:
1 Mycorrhiza
2 Cyanobacteria
3 Rhizobium
4 Large quantity of humus
Explanation:
Biofertilizers are the organisms that enrich the soil and increase the availability of nutrients to plants. - Azolla is an aquatic fern, used as biofertilizer as it has a symbiotic association with nitrogen fixing cyanobacteria (e.g. Anabaena).
260053
BGA (blue-green algae) is chiefly used as biofertilizer in the crop of:
1 Wheat
2 Gram
3 Paddy
4 Mustard
Explanation:
Blue-green algae (BGA) is chiefly used as biofertilizer in paddy fields. - Blue-green algae are autotrophic microbes widely distributed in aquatic and terrestrial environments many of which can fix atmospheric nitrogen, e.g. Anabaena, Nostoc etc.
Haryana PMT-1999
Microbes in Human Welfare
260054
Which of the following is a biofertilizer?
1 Funaria
2 Fern
3 Anabaena
4 Fungus
Explanation:
Biofertilizers are organisms that enrich the nutrient quality of the soil. The main sources of biofertilizers are bacteria, cyanobacteria and fungi. - Cyanobacteria e.g. Anabaena, Nostoc fix atmospheric nitrogen thus enriching the soil fertility. Hence, these organisms are used as biofertilizers.
CG PMT-2006 / JIPMER-2006
Microbes in Human Welfare
260058
Bacillus thuringiensis is a soil bacterium that produces a $\qquad$ with insecticidal properties.
1 Polysaccharide
2 Hormone
3 Protein
4 Lipid
Explanation:
Soil bacterium Bacillus thuringiensis produces proteins that kill certain insects like lepidopterans, coleopterans and dipterans (flies, mosquitoes). - Bacteria produce protein crystals containing inactive toxin. Hence these toxins do not harm the bacteria, but kill insects when they ingest plant parts expressing them. Alkaline $\mathrm{pH}$ of alimentary canal of insect solubilize the crystal and converts inactive protoxins into active toxins.
MHT CET-07.10.2020 Shift-I
Microbes in Human Welfare
260059
Azolla is used as bio-fertilizer as it has:
1 Mycorrhiza
2 Cyanobacteria
3 Rhizobium
4 Large quantity of humus
Explanation:
Biofertilizers are the organisms that enrich the soil and increase the availability of nutrients to plants. - Azolla is an aquatic fern, used as biofertilizer as it has a symbiotic association with nitrogen fixing cyanobacteria (e.g. Anabaena).
260053
BGA (blue-green algae) is chiefly used as biofertilizer in the crop of:
1 Wheat
2 Gram
3 Paddy
4 Mustard
Explanation:
Blue-green algae (BGA) is chiefly used as biofertilizer in paddy fields. - Blue-green algae are autotrophic microbes widely distributed in aquatic and terrestrial environments many of which can fix atmospheric nitrogen, e.g. Anabaena, Nostoc etc.
Haryana PMT-1999
Microbes in Human Welfare
260054
Which of the following is a biofertilizer?
1 Funaria
2 Fern
3 Anabaena
4 Fungus
Explanation:
Biofertilizers are organisms that enrich the nutrient quality of the soil. The main sources of biofertilizers are bacteria, cyanobacteria and fungi. - Cyanobacteria e.g. Anabaena, Nostoc fix atmospheric nitrogen thus enriching the soil fertility. Hence, these organisms are used as biofertilizers.
CG PMT-2006 / JIPMER-2006
Microbes in Human Welfare
260058
Bacillus thuringiensis is a soil bacterium that produces a $\qquad$ with insecticidal properties.
1 Polysaccharide
2 Hormone
3 Protein
4 Lipid
Explanation:
Soil bacterium Bacillus thuringiensis produces proteins that kill certain insects like lepidopterans, coleopterans and dipterans (flies, mosquitoes). - Bacteria produce protein crystals containing inactive toxin. Hence these toxins do not harm the bacteria, but kill insects when they ingest plant parts expressing them. Alkaline $\mathrm{pH}$ of alimentary canal of insect solubilize the crystal and converts inactive protoxins into active toxins.
MHT CET-07.10.2020 Shift-I
Microbes in Human Welfare
260059
Azolla is used as bio-fertilizer as it has:
1 Mycorrhiza
2 Cyanobacteria
3 Rhizobium
4 Large quantity of humus
Explanation:
Biofertilizers are the organisms that enrich the soil and increase the availability of nutrients to plants. - Azolla is an aquatic fern, used as biofertilizer as it has a symbiotic association with nitrogen fixing cyanobacteria (e.g. Anabaena).
260053
BGA (blue-green algae) is chiefly used as biofertilizer in the crop of:
1 Wheat
2 Gram
3 Paddy
4 Mustard
Explanation:
Blue-green algae (BGA) is chiefly used as biofertilizer in paddy fields. - Blue-green algae are autotrophic microbes widely distributed in aquatic and terrestrial environments many of which can fix atmospheric nitrogen, e.g. Anabaena, Nostoc etc.
Haryana PMT-1999
Microbes in Human Welfare
260054
Which of the following is a biofertilizer?
1 Funaria
2 Fern
3 Anabaena
4 Fungus
Explanation:
Biofertilizers are organisms that enrich the nutrient quality of the soil. The main sources of biofertilizers are bacteria, cyanobacteria and fungi. - Cyanobacteria e.g. Anabaena, Nostoc fix atmospheric nitrogen thus enriching the soil fertility. Hence, these organisms are used as biofertilizers.
CG PMT-2006 / JIPMER-2006
Microbes in Human Welfare
260058
Bacillus thuringiensis is a soil bacterium that produces a $\qquad$ with insecticidal properties.
1 Polysaccharide
2 Hormone
3 Protein
4 Lipid
Explanation:
Soil bacterium Bacillus thuringiensis produces proteins that kill certain insects like lepidopterans, coleopterans and dipterans (flies, mosquitoes). - Bacteria produce protein crystals containing inactive toxin. Hence these toxins do not harm the bacteria, but kill insects when they ingest plant parts expressing them. Alkaline $\mathrm{pH}$ of alimentary canal of insect solubilize the crystal and converts inactive protoxins into active toxins.
MHT CET-07.10.2020 Shift-I
Microbes in Human Welfare
260059
Azolla is used as bio-fertilizer as it has:
1 Mycorrhiza
2 Cyanobacteria
3 Rhizobium
4 Large quantity of humus
Explanation:
Biofertilizers are the organisms that enrich the soil and increase the availability of nutrients to plants. - Azolla is an aquatic fern, used as biofertilizer as it has a symbiotic association with nitrogen fixing cyanobacteria (e.g. Anabaena).
