Discussion
Earthworms used for Vermicomposting is/are
A. Eisenia fetida
B. Lumbricus rubellus
C. Caenorhabditis elegans
D. Platyhelminthes
Choose the correct answer from the options given below :
Answer: B
The earthworms are A and B, so the answer is Only A and B.
Eisenia fetida (the red wiggler) and Lumbricus rubellus (the red earthworm) are surface-dwelling (epigeic) earthworms that feed on decaying organic matter, breed quickly and tolerate crowding, which makes them the standard species for vermicomposting. Eudrilus eugeniae and Perionyx excavatus are also widely used in India.
Caenorhabditis elegans is a tiny nematode (roundworm) used in laboratory research, not an earthworm. Platyhelminthes is the phylum of flatworms, such as tapeworms and flukes. Options including C or D are therefore wrong.
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