Plathyelminthes
Flatworms -
They
belong
to
the
phylum
platyhelminthes.
The
intestinal
tract
of
these
worms
consists
of
a
blind
sac.
Single
worm
contains
both
male
and
female
sex
organs
(hermaphroditic).
The
life
cycle
is
rather
complex
involving
several
different
forms
and
a
number
of
intermediate
hosts.
Humans
are
definitive
or
intermediate
hosts.





