💥Join UPSC 2027,2028 Mentorship (June Batch) + Access XFactor Notes & Microthemes PDF

Which of the following is/are used as biofertilizers ? I. Azolla II. Blue-green algae III. Alfalfa. Select the correct answer using the codes given below.

1994

(a)

II alone

(b)

I and II

(c)

I and III

(d)

I, II and III

Answer:

Which of the following is/are used as biofertilizers ? I. Azolla II. Blue-green algae III. Alfalfa. Select the correct answer using the codes given below.

Explanation