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Topics/General Science/Biology/Heredity
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Q.11U.P.P.C.S. (Pre) 2001, 2002
MCQ

Which of the following is/are used as biofertilizers? Select the correct answer from the codes 2given below: 1. Azolla 2. Blue-green algae 3. Alfalfa 4. Nitrolin Codes :

(a) 2 and 4
(b) 1, 2 and 4
(c) 2, 3 and 4
(d) 1, 2 and 3
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