343754
The use of natural fertilizers, biopesticides as well as biofertilizers in agriculture is called ____
1 Organic farming
2 In organic farming
3 Plant breeding
4 Weeding
Explanation:
The use of natural fertilizers, biopesticides as well as biofertilizers in agriculture is called Organic farming.
BIOXII10: MICROBES IN HUMAN WELFARE
343756
A nitrogen fixing cyanobacteria associated with azolla in rice fields and increases crop yield.
1 Anabaena
2 Azobacter
3 Aulosira
4 Azospirillium
Explanation:
Azolla pinnata is a small aquatic fern with association of Anabaena , Anabaena has ability to fix Nitrogen in soil and increases crop yield \(>50 \%\).
AIPMT - 2011
BIOXII10: MICROBES IN HUMAN WELFARE
343757
Biofertilizers include
1 Blue green algae, Rhizobia and other \(\mathrm{N}_{2}\) fixing bacteria
2 Blue green algae, Rhizobia and lichens
3 Rhizobia , other \(\mathrm{N}_{2}\) fixing bacteria and Non mycorrhizal fungi
4 Blue green algae, Rhizobia and mycorrhizal fungi
Explanation:
Blue green algae, rhizobia and other \(\mathrm{N}_{2}\) fixing bacteria are used as biofertilizers.
BIOXII10: MICROBES IN HUMAN WELFARE
343758
Assertion : Nitrogen fixing enzyme in legume root nodules functions at low oxygen concentration. Reason : Low oxygen concentration is provided by Leghaemoglobin.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect
Explanation:
Oxygen is required to generate sufficient respiratory energy to drive \(\mathrm{N}_{2}\) fixation, but too much oxygen inactivates nitrogenase. Biological nitrogen fixation occurs when atmospheric nitrogen is converted to ammonia by a pair of bacterial enzyme called nitrogenase. In root nodules the \(\mathrm{O}_{2}\) level is regulated by special haemoglobin (leghaemoglobin).The globin protein is encoded by plant genes but the heme factor is made by the symbiotic bacteria. This is produced only when the plant is infected with Rhizobium. The plant root cells convert sugar to organic acids which they supply to the bacteroids. In exchange, the plant receives Amino acids.
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BIOXII10: MICROBES IN HUMAN WELFARE
343754
The use of natural fertilizers, biopesticides as well as biofertilizers in agriculture is called ____
1 Organic farming
2 In organic farming
3 Plant breeding
4 Weeding
Explanation:
The use of natural fertilizers, biopesticides as well as biofertilizers in agriculture is called Organic farming.
BIOXII10: MICROBES IN HUMAN WELFARE
343756
A nitrogen fixing cyanobacteria associated with azolla in rice fields and increases crop yield.
1 Anabaena
2 Azobacter
3 Aulosira
4 Azospirillium
Explanation:
Azolla pinnata is a small aquatic fern with association of Anabaena , Anabaena has ability to fix Nitrogen in soil and increases crop yield \(>50 \%\).
AIPMT - 2011
BIOXII10: MICROBES IN HUMAN WELFARE
343757
Biofertilizers include
1 Blue green algae, Rhizobia and other \(\mathrm{N}_{2}\) fixing bacteria
2 Blue green algae, Rhizobia and lichens
3 Rhizobia , other \(\mathrm{N}_{2}\) fixing bacteria and Non mycorrhizal fungi
4 Blue green algae, Rhizobia and mycorrhizal fungi
Explanation:
Blue green algae, rhizobia and other \(\mathrm{N}_{2}\) fixing bacteria are used as biofertilizers.
BIOXII10: MICROBES IN HUMAN WELFARE
343758
Assertion : Nitrogen fixing enzyme in legume root nodules functions at low oxygen concentration. Reason : Low oxygen concentration is provided by Leghaemoglobin.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect
Explanation:
Oxygen is required to generate sufficient respiratory energy to drive \(\mathrm{N}_{2}\) fixation, but too much oxygen inactivates nitrogenase. Biological nitrogen fixation occurs when atmospheric nitrogen is converted to ammonia by a pair of bacterial enzyme called nitrogenase. In root nodules the \(\mathrm{O}_{2}\) level is regulated by special haemoglobin (leghaemoglobin).The globin protein is encoded by plant genes but the heme factor is made by the symbiotic bacteria. This is produced only when the plant is infected with Rhizobium. The plant root cells convert sugar to organic acids which they supply to the bacteroids. In exchange, the plant receives Amino acids.
343754
The use of natural fertilizers, biopesticides as well as biofertilizers in agriculture is called ____
1 Organic farming
2 In organic farming
3 Plant breeding
4 Weeding
Explanation:
The use of natural fertilizers, biopesticides as well as biofertilizers in agriculture is called Organic farming.
BIOXII10: MICROBES IN HUMAN WELFARE
343756
A nitrogen fixing cyanobacteria associated with azolla in rice fields and increases crop yield.
1 Anabaena
2 Azobacter
3 Aulosira
4 Azospirillium
Explanation:
Azolla pinnata is a small aquatic fern with association of Anabaena , Anabaena has ability to fix Nitrogen in soil and increases crop yield \(>50 \%\).
AIPMT - 2011
BIOXII10: MICROBES IN HUMAN WELFARE
343757
Biofertilizers include
1 Blue green algae, Rhizobia and other \(\mathrm{N}_{2}\) fixing bacteria
2 Blue green algae, Rhizobia and lichens
3 Rhizobia , other \(\mathrm{N}_{2}\) fixing bacteria and Non mycorrhizal fungi
4 Blue green algae, Rhizobia and mycorrhizal fungi
Explanation:
Blue green algae, rhizobia and other \(\mathrm{N}_{2}\) fixing bacteria are used as biofertilizers.
BIOXII10: MICROBES IN HUMAN WELFARE
343758
Assertion : Nitrogen fixing enzyme in legume root nodules functions at low oxygen concentration. Reason : Low oxygen concentration is provided by Leghaemoglobin.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect
Explanation:
Oxygen is required to generate sufficient respiratory energy to drive \(\mathrm{N}_{2}\) fixation, but too much oxygen inactivates nitrogenase. Biological nitrogen fixation occurs when atmospheric nitrogen is converted to ammonia by a pair of bacterial enzyme called nitrogenase. In root nodules the \(\mathrm{O}_{2}\) level is regulated by special haemoglobin (leghaemoglobin).The globin protein is encoded by plant genes but the heme factor is made by the symbiotic bacteria. This is produced only when the plant is infected with Rhizobium. The plant root cells convert sugar to organic acids which they supply to the bacteroids. In exchange, the plant receives Amino acids.
343754
The use of natural fertilizers, biopesticides as well as biofertilizers in agriculture is called ____
1 Organic farming
2 In organic farming
3 Plant breeding
4 Weeding
Explanation:
The use of natural fertilizers, biopesticides as well as biofertilizers in agriculture is called Organic farming.
BIOXII10: MICROBES IN HUMAN WELFARE
343756
A nitrogen fixing cyanobacteria associated with azolla in rice fields and increases crop yield.
1 Anabaena
2 Azobacter
3 Aulosira
4 Azospirillium
Explanation:
Azolla pinnata is a small aquatic fern with association of Anabaena , Anabaena has ability to fix Nitrogen in soil and increases crop yield \(>50 \%\).
AIPMT - 2011
BIOXII10: MICROBES IN HUMAN WELFARE
343757
Biofertilizers include
1 Blue green algae, Rhizobia and other \(\mathrm{N}_{2}\) fixing bacteria
2 Blue green algae, Rhizobia and lichens
3 Rhizobia , other \(\mathrm{N}_{2}\) fixing bacteria and Non mycorrhizal fungi
4 Blue green algae, Rhizobia and mycorrhizal fungi
Explanation:
Blue green algae, rhizobia and other \(\mathrm{N}_{2}\) fixing bacteria are used as biofertilizers.
BIOXII10: MICROBES IN HUMAN WELFARE
343758
Assertion : Nitrogen fixing enzyme in legume root nodules functions at low oxygen concentration. Reason : Low oxygen concentration is provided by Leghaemoglobin.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect
Explanation:
Oxygen is required to generate sufficient respiratory energy to drive \(\mathrm{N}_{2}\) fixation, but too much oxygen inactivates nitrogenase. Biological nitrogen fixation occurs when atmospheric nitrogen is converted to ammonia by a pair of bacterial enzyme called nitrogenase. In root nodules the \(\mathrm{O}_{2}\) level is regulated by special haemoglobin (leghaemoglobin).The globin protein is encoded by plant genes but the heme factor is made by the symbiotic bacteria. This is produced only when the plant is infected with Rhizobium. The plant root cells convert sugar to organic acids which they supply to the bacteroids. In exchange, the plant receives Amino acids.