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One very special feature in the earthwor...

One very special feature in the earthworm Pheretima is that

A

It has a long dorsal tubular heart

B

Fertilisation of eggs occurs inside the body

C

The typhlosole greatly increase the effective absorption are of the digested food in the intstine

D

The S - shaped setae embedded in the integument are the defensive weapons used against the enemies

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