Q: 48 (IES/2012)

The species of which of the following kinds of organisms is/are generally used as biofertilizers ?
1. Blue green algae
2. Ferns
3. Mosses

Select the correct answer using the codes given below :
question_subject: 
Science
question_year: 
2012
question_exam: 
IES
stats: 
0,1800,1784,1144,192,440,1808