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Which one of the following is non-symbiotic biofertilizer?
[1998]
- a)Azotobacter
- b)Anabaena
- c)Rhizobium
- d)VAM.
Correct answer is option 'A'. Can you explain this answer?
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Which one of the following is non-symbiotic biofertilizer?[1998]a)Azot...
Azotobacter is a free living nitrogen fixing bacterium, Rhizobium is symbiotic and found in the root nodules of leguminous plants, Anabaena occurs in assoction with Azolla. VAM is vesicular arbuscular mycorrhiza.
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Which one of the following is non-symbiotic biofertilizer?[1998]a)Azot...
Non-symbiotic Biofertilizer
- Biofertilizers are the living organisms that enrich the nutrient quality of the soil to promote plant growth.
- There are two types of biofertilizers- symbiotic and non-symbiotic.
- Symbiotic biofertilizers are those that establish a mutualistic relationship with the plant and fix atmospheric nitrogen. Example- Rhizobium, Azolla, Frankia, etc.
- Non-symbiotic biofertilizers are those that do not form any symbiotic relationship with the plant and are free-living. Example- Azotobacter, Azospirillum, etc.
Answer: (a) Azotobacter is a non-symbiotic biofertilizer.
- Biofertilizers are the living organisms that enrich the nutrient quality of the soil to promote plant growth.
- There are two types of biofertilizers- symbiotic and non-symbiotic.
- Symbiotic biofertilizers are those that establish a mutualistic relationship with the plant and fix atmospheric nitrogen. Example- Rhizobium, Azolla, Frankia, etc.
- Non-symbiotic biofertilizers are those that do not form any symbiotic relationship with the plant and are free-living. Example- Azotobacter, Azospirillum, etc.
Answer: (a) Azotobacter is a non-symbiotic biofertilizer.
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Community Answer
Which one of the following is non-symbiotic biofertilizer?[1998]a)Azot...
As we know that anabaena is associated with azolla,Vam is vesicular arbucular mycorrhiza and rhizobium is symbiotically associated with root of legumes plant .
whereas ,Azotobacter is free living nitrogen fixing bacteria. but this is also show symbiotic association with some plant and this is also used in crop field for nitrogen fixation .
so I think they all are symbiotically associated.
whereas ,Azotobacter is free living nitrogen fixing bacteria. but this is also show symbiotic association with some plant and this is also used in crop field for nitrogen fixation .
so I think they all are symbiotically associated.
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Which one of the following is non-symbiotic biofertilizer?[1998]a)Azotobacterb)Anabaenac)Rhizobiumd)VAM.Correct answer is option 'A'. Can you explain this answer?
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