A) bait for catching fish
B) food of poultry
C) medicine for gout
D) All of the above
Correct Answer: D
Solution :
Earthworms are of great economic importance for man. These are the 'natural plougman' which make the soil porous and fertile. These are also used in medicines for piles, gout, diarrhoea, jaundice, stones of bladder and sexual impotency earthworms are also used as bait for fishes.
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