Q. Which one of the following is not used in organic farming?
A) Snail
B) Glomus
C) Earthworm
D) Oscillatoria
Explanation
[Solution from source] Glomus (a mycorrhizal fungus) and Oscillatoria (a cyanobacterium) are biofertilisers, and earthworms make vermicompost, so all three help organic farming. Snails have no such role and are usually crop pests. Answer (1).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.