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One very special feature in the earthwor...

One very special feature in the earthworm is that

A

It has a long dorsal tubular heart

B

Fertilisation of eggs occurs inside the body

C

The typhlosole greatly increases the effective absorption area of the digested food in the intestine

D

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

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The correct Answer is:
C
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