Question

Earthworms are
(a) useful
(b) harmful
(c) more useful than harmful
(d) more harmful

Answer 1

Answer:

more useful than harmful

Explanation:

They are used for vermicomposting. They also helps in making soil fertile

Answer 2

(a) useful

Explanation:

Earthworm make burrows in the soil and make it porous which helps in respiration and penetration of the developing plant roots so they are known as ' friends of farmers.' Vermicomposting is the process by which increasing fertility of soil by earthworm. They enrich the soil by nephridial excretion. Therefore earthworms are also used as bait in game fishing. Hence, earthworms are very useful.