. One very special feature in the earthworm
(Pheretima) is that
(a) fertilization of eggs occurs inside the body
(b) the typhlosole greatly increases the effective
absorption area of the digested food in the
intestine
(c) the S-shaped setae embedded in the integument
are the defensive weapons used against the
enemies
(d) it has a long dorsal tubular heart.
(Pheretima) is that
(a) fertilization of eggs occurs inside the body
(b) the typhlosole greatly increases the effective
absorption area of the digested food in the
intestine
(c) the S-shaped setae embedded in the integument
are the defensive weapons used against the
enemies
(d) it has a long dorsal tubular heart.