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Which of the following bacterium is photosynthetic free living aerobic nitrogen fixer ?
- a)Anabaena
- b)Rhizobium
- c)Azospirillum
- d)Azotobacter
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
Which of the following bacterium is photosyntheticfree living aerobic ...
Anabaena is a cyanobacteria (blue green algae), form symbiotic relationship with Azolla. It has heterocyst, a specialized structure where nitrogen fixation takes place.
Rhizobium live in association with legume plants.
Azotobacter is free living nitrogen fixing, aerobic bacteria.
Azospirillum is free living nitrogen fixing bacteria but it is microaerophilic (need less concentration of oxygen, at higher oxygen concentration they get killed). It is not photosynthetic.
There is no any option here.that match your question.
Community Answer
Which of the following bacterium is photosyntheticfree living aerobic ...
Photosynthetic Free-Living Aerobic Nitrogen Fixer Bacterium
Anabaena, Rhizobium, Azospirillum, and Azotobacter are all different types of bacteria with unique characteristics. Among these, the bacterium that fits the description of being a photosynthetic free-living aerobic nitrogen fixer is Azospirillum.
Azospirillum
Azospirillum is a genus of bacteria that is known for its ability to fix nitrogen aerobically, meaning it can convert atmospheric nitrogen into a form that plants can use. This process is essential for plant growth and development, as nitrogen is a crucial nutrient for plants.
Photosynthetic
Azospirillum is not photosynthetic, which means it does not use sunlight to produce energy like some other bacteria. Instead, it obtains energy through aerobic respiration.
Free-Living
Azospirillum is considered free-living because it can survive and grow independently in the environment without relying on a host organism. It is commonly found in soil and water habitats.
Aerobic Nitrogen Fixer
Azospirillum is an aerobic nitrogen fixer, meaning it can carry out nitrogen fixation in the presence of oxygen. This ability allows Azospirillum to contribute to the nitrogen cycle by converting atmospheric nitrogen into a form that can be utilized by plants.
In conclusion, Azospirillum is a photosynthetic-free-living aerobic nitrogen fixer bacterium that plays an important role in promoting plant growth and enhancing soil fertility.
Anabaena, Rhizobium, Azospirillum, and Azotobacter are all different types of bacteria with unique characteristics. Among these, the bacterium that fits the description of being a photosynthetic free-living aerobic nitrogen fixer is Azospirillum.
Azospirillum
Azospirillum is a genus of bacteria that is known for its ability to fix nitrogen aerobically, meaning it can convert atmospheric nitrogen into a form that plants can use. This process is essential for plant growth and development, as nitrogen is a crucial nutrient for plants.
Photosynthetic
Azospirillum is not photosynthetic, which means it does not use sunlight to produce energy like some other bacteria. Instead, it obtains energy through aerobic respiration.
Free-Living
Azospirillum is considered free-living because it can survive and grow independently in the environment without relying on a host organism. It is commonly found in soil and water habitats.
Aerobic Nitrogen Fixer
Azospirillum is an aerobic nitrogen fixer, meaning it can carry out nitrogen fixation in the presence of oxygen. This ability allows Azospirillum to contribute to the nitrogen cycle by converting atmospheric nitrogen into a form that can be utilized by plants.
In conclusion, Azospirillum is a photosynthetic-free-living aerobic nitrogen fixer bacterium that plays an important role in promoting plant growth and enhancing soil fertility.
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Which of the following bacterium is photosyntheticfree living aerobic nitrogen fixer ?a)Anabaenab)Rhizobiumc)Azospirillumd)AzotobacterCorrect answer is option 'C'. Can you explain this answer?
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