Question

One very special feature in the earthworm pheretima is that

Answer 1

One very special feature in the earthworm pheretima is that 1. It has a long dorsal tubular heart

Answer 2

One very special feature in the earthworm pheretima is that 
1. It has a long dorsal tubular heart 
2. Fertilisation of eggs occurs inside the body 
3. The typhlosole greatly increases the effective absorption area of the digested food 
in the intestine 
4. The S-shaped setae embedded in the integument are the defensive weapons used 
against the enemies