|(i) What is Nostoc?|
|(ii) How does Nostoc help to increase the yield of paddy?|
|(iii) What values were shown by Prakash?|
|(i) Nostoc is a cyanobacterium, that is used as a biofertiliser.|
|(ii) Nostoc can fix atmospheric nitrogen in the soil, in the forms which can be easily absorbed by plants.Hence, it helps to fulfill nitrogen requirements in paddy fields.|
|(iii) Prakash was an aware and responsible farmer who thought of taking help from agriculture department.|
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