Sample questions
You've seen the pattern — here are a few of the actual PYQs.
CSE2010
Which feature of some species of blue-green algae helps promote them as bio-fertilizers?
- A They convert atmospheric methane into ammonia which the crop plants can absorb readily
- B They induce the crop plants to produce the enzymes which help convert atmospheric nitrogen to nitrates
- C They have the mechanism to convert atmospheric nitrogen into a form that the crop plants can absorb readily
- D They induce the roots of the crop plants to absorb the soil nitrates in larger quantities
Answer key not yet available (pending official release)
Science & Technology › Biotech & Genetics
CSE2001
Which one of the following organisms can serve as a biofertilizer for rice crop? (2001)
- A Blue-green algae ✓
- B Rhizobium sp
- C Mycorrhizal fungi
- D Azotobacter sp
✓ Correct answer: (A)
Agriculture › Soils & Inputs
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