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Nostoc is known to perform [C.G.PMT-2006]
- a)Only photosynthesis
- b)Photosynthesis and nitrogen fixation simultaneously
- c)Only nitrogen fixation
- d)Either photosynthesis or nitrogen fixation at a time
Correct answer is option 'B'. Can you explain this answer?
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Nostoc is known to perform [C.G.PMT-2006]a)Only photosynthesisb)Photos...
Nostoc is a filamentous blue green algae. It has chlorophyll pigment so it can perform photosynthesis.And they are capable of nitrogen fixation by specialised cells called heterocysts. u can also find the answer in pg no.19 in ncert class 11 biology text book under the column Eubacteria.
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Nostoc is known to perform [C.G.PMT-2006]a)Only photosynthesisb)Photos...
Photosynthesis and Nitrogen Fixation in Nostoc
Nostoc is a genus of cyanobacteria that is known to perform both photosynthesis and nitrogen fixation simultaneously.
Photosynthesis in Nostoc
- Like all cyanobacteria, Nostoc is capable of photosynthesis, which is the process by which plants, algae, and some bacteria convert light energy into chemical energy stored in glucose.
- During photosynthesis, Nostoc uses sunlight to convert carbon dioxide and water into glucose and oxygen. This process is essential for the organism's survival and growth.
Nitrogen Fixation in Nostoc
- In addition to photosynthesis, Nostoc is also capable of nitrogen fixation, which is the conversion of atmospheric nitrogen into ammonia, a form of nitrogen that can be used by plants and other organisms.
- Nostoc has specialized cells called heterocysts that are responsible for nitrogen fixation. These cells provide an anaerobic environment for the enzyme nitrogenase to function, allowing Nostoc to fix nitrogen even in the presence of oxygen.
Simultaneous Performance of Photosynthesis and Nitrogen Fixation
- Nostoc is unique in its ability to perform both photosynthesis and nitrogen fixation simultaneously. This dual capability allows the organism to thrive in diverse environments, as it can produce its own energy through photosynthesis while also contributing nitrogen to the ecosystem through fixation.
In conclusion, Nostoc's ability to perform both photosynthesis and nitrogen fixation simultaneously makes it a vital contributor to the ecosystem, playing a crucial role in nutrient cycling and primary productivity.
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Nostoc is known to perform [C.G.PMT-2006]a)Only photosynthesisb)Photosynthesis and nitrogen fixation simultaneouslyc)Only nitrogen fixationd)Either photosynthesis or nitrogen fixation at a timeCorrect answer is option 'B'. Can you explain this answer?
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