Gujarat BoardEnglish MediumSTD 7ScienceWastewater Story1 Mark
MCQ
The worm used in vermi $-$ processing toilet is:
✓
Earthworms
B
Roundworm
C
Flatworm
D
None of the above
✓
Answer
Correct option: A.
Earthworms
Vermi $-$ processing toilets is a design of a toilet in which humans excreta is treated by earthworms and redworms.
In this process, human excreta is completely converted to cake$-$like structures called vermi cakes by earthworms.
Vermi cakes are used as manure and fertilizers.
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