UPSC Civil Services Prelims 2013
Question 63 of 64Environment and Ecology
Consider the following organisms: 1. Agaricus 2. Nostoc 3. Spirogyra. Which of the above is/are used as biofertilizer/biofertilizers?
A1 and 2
B2 only
C2 and 3
D3 only
Correct Answer
The correct answer is hidden
Explanation
20 words hidden ... mainly as a mushroom, and Spirogyra is a green alga not classically used as a standard biofertilizer in this context. ... 15 words hidden