UPSC Civil Services 2013 Prelims General Studies Paper I
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Question : 8 of 100
Marks:
+1,
-0
Consider the following organisms:
1. Agaricus
2. Nostoc
3. Spirogyra
Which of the above is/are used as biofertilizer / biofertilizers?
1. Agaricus
2. Nostoc
3. Spirogyra
Which of the above is/are used as biofertilizer / biofertilizers?
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