260068
Nodules with nitrogen -fixing bacteria are found in
1 Cotton
2 Gram
3 Mustard
4 Wheat
Explanation:
Nodules on the roots of leguminous plants like gram formed by the symbiotic association of Rhizobium. These bacteria fix atmospheric nitrogen into organic forms, which is used by the plants as nutrient.
MGIMS Wardha-2010
Microbes in Human Welfare
260070
Azolla is used as a biofertilizer because it:
1 Multiplies very fast to produce massive biomass
2 Has association of nitrogen-fixing Rhizobium
3 Has association of nitrogen-fixing cyanobacteria
4 Has association of mycorrhiza.
Explanation:
Azolla is water fern which is also used as a biofertilizer because it forms a symbiotic association with nitrogen fixing cyanobacteria. Azolla pinnata a pteridophyte, is used as an excellent fertilizer in rice field. Biofertilizers are eco-friendly and cost effective.
AIIMS-2003 / DUMET-2002
Microbes in Human Welfare
260073
Which one of the following is not a biofertilizer?
1 Mycorrhiza
2 Agrobacterium
3 Rhizobium
4 Nostoc
Explanation:
Agrobacterium is a genus of bacteria that can cause crown gall disease in plants. It is not a biofertilizer because it does not provide any nutrients to plants or help them to grow. The mycorrhiza is a symbiotic association between a fungus and a plant, Rhizobium bacteria are helpful in the nitrogen fixation and the nostoc which is a blue green algae also fix the nitrogen in the soil.
AIPMT (Screening)-2011
Microbes in Human Welfare
260077
Cells in the quiescent stage $\left(G_0\right)$
1 Show indefinite proliferation
2 Remain metabolically active
3 Always become cancerous
4 Remain metabolically inactive
Explanation:
Cells in the quiescent stage $\left(\mathrm{G}_0\right)$ are not actively dividing, but they are still metabolically active. They can perform all of the normal cellular functions that are necessary to maintain themselves, such as respiration, protein synthesis and waste removal.
260068
Nodules with nitrogen -fixing bacteria are found in
1 Cotton
2 Gram
3 Mustard
4 Wheat
Explanation:
Nodules on the roots of leguminous plants like gram formed by the symbiotic association of Rhizobium. These bacteria fix atmospheric nitrogen into organic forms, which is used by the plants as nutrient.
MGIMS Wardha-2010
Microbes in Human Welfare
260070
Azolla is used as a biofertilizer because it:
1 Multiplies very fast to produce massive biomass
2 Has association of nitrogen-fixing Rhizobium
3 Has association of nitrogen-fixing cyanobacteria
4 Has association of mycorrhiza.
Explanation:
Azolla is water fern which is also used as a biofertilizer because it forms a symbiotic association with nitrogen fixing cyanobacteria. Azolla pinnata a pteridophyte, is used as an excellent fertilizer in rice field. Biofertilizers are eco-friendly and cost effective.
AIIMS-2003 / DUMET-2002
Microbes in Human Welfare
260073
Which one of the following is not a biofertilizer?
1 Mycorrhiza
2 Agrobacterium
3 Rhizobium
4 Nostoc
Explanation:
Agrobacterium is a genus of bacteria that can cause crown gall disease in plants. It is not a biofertilizer because it does not provide any nutrients to plants or help them to grow. The mycorrhiza is a symbiotic association between a fungus and a plant, Rhizobium bacteria are helpful in the nitrogen fixation and the nostoc which is a blue green algae also fix the nitrogen in the soil.
AIPMT (Screening)-2011
Microbes in Human Welfare
260077
Cells in the quiescent stage $\left(G_0\right)$
1 Show indefinite proliferation
2 Remain metabolically active
3 Always become cancerous
4 Remain metabolically inactive
Explanation:
Cells in the quiescent stage $\left(\mathrm{G}_0\right)$ are not actively dividing, but they are still metabolically active. They can perform all of the normal cellular functions that are necessary to maintain themselves, such as respiration, protein synthesis and waste removal.
260068
Nodules with nitrogen -fixing bacteria are found in
1 Cotton
2 Gram
3 Mustard
4 Wheat
Explanation:
Nodules on the roots of leguminous plants like gram formed by the symbiotic association of Rhizobium. These bacteria fix atmospheric nitrogen into organic forms, which is used by the plants as nutrient.
MGIMS Wardha-2010
Microbes in Human Welfare
260070
Azolla is used as a biofertilizer because it:
1 Multiplies very fast to produce massive biomass
2 Has association of nitrogen-fixing Rhizobium
3 Has association of nitrogen-fixing cyanobacteria
4 Has association of mycorrhiza.
Explanation:
Azolla is water fern which is also used as a biofertilizer because it forms a symbiotic association with nitrogen fixing cyanobacteria. Azolla pinnata a pteridophyte, is used as an excellent fertilizer in rice field. Biofertilizers are eco-friendly and cost effective.
AIIMS-2003 / DUMET-2002
Microbes in Human Welfare
260073
Which one of the following is not a biofertilizer?
1 Mycorrhiza
2 Agrobacterium
3 Rhizobium
4 Nostoc
Explanation:
Agrobacterium is a genus of bacteria that can cause crown gall disease in plants. It is not a biofertilizer because it does not provide any nutrients to plants or help them to grow. The mycorrhiza is a symbiotic association between a fungus and a plant, Rhizobium bacteria are helpful in the nitrogen fixation and the nostoc which is a blue green algae also fix the nitrogen in the soil.
AIPMT (Screening)-2011
Microbes in Human Welfare
260077
Cells in the quiescent stage $\left(G_0\right)$
1 Show indefinite proliferation
2 Remain metabolically active
3 Always become cancerous
4 Remain metabolically inactive
Explanation:
Cells in the quiescent stage $\left(\mathrm{G}_0\right)$ are not actively dividing, but they are still metabolically active. They can perform all of the normal cellular functions that are necessary to maintain themselves, such as respiration, protein synthesis and waste removal.
260068
Nodules with nitrogen -fixing bacteria are found in
1 Cotton
2 Gram
3 Mustard
4 Wheat
Explanation:
Nodules on the roots of leguminous plants like gram formed by the symbiotic association of Rhizobium. These bacteria fix atmospheric nitrogen into organic forms, which is used by the plants as nutrient.
MGIMS Wardha-2010
Microbes in Human Welfare
260070
Azolla is used as a biofertilizer because it:
1 Multiplies very fast to produce massive biomass
2 Has association of nitrogen-fixing Rhizobium
3 Has association of nitrogen-fixing cyanobacteria
4 Has association of mycorrhiza.
Explanation:
Azolla is water fern which is also used as a biofertilizer because it forms a symbiotic association with nitrogen fixing cyanobacteria. Azolla pinnata a pteridophyte, is used as an excellent fertilizer in rice field. Biofertilizers are eco-friendly and cost effective.
AIIMS-2003 / DUMET-2002
Microbes in Human Welfare
260073
Which one of the following is not a biofertilizer?
1 Mycorrhiza
2 Agrobacterium
3 Rhizobium
4 Nostoc
Explanation:
Agrobacterium is a genus of bacteria that can cause crown gall disease in plants. It is not a biofertilizer because it does not provide any nutrients to plants or help them to grow. The mycorrhiza is a symbiotic association between a fungus and a plant, Rhizobium bacteria are helpful in the nitrogen fixation and the nostoc which is a blue green algae also fix the nitrogen in the soil.
AIPMT (Screening)-2011
Microbes in Human Welfare
260077
Cells in the quiescent stage $\left(G_0\right)$
1 Show indefinite proliferation
2 Remain metabolically active
3 Always become cancerous
4 Remain metabolically inactive
Explanation:
Cells in the quiescent stage $\left(\mathrm{G}_0\right)$ are not actively dividing, but they are still metabolically active. They can perform all of the normal cellular functions that are necessary to maintain themselves, such as respiration, protein synthesis and waste removal.
