- The
peristomium is the
first true body
segment in an
annelid worm's body in the
anterior end. It is
directly behind the
prostomium and
contains the mouth...
- the
blood makes its
entire circuit via
blood vessels. Prostomium
Peristomium O Mouth Growth zone Pygidium O **** In
addition to
Sipuncula and...
- over the
dorsal side of the mouth. The
prostomium together with the
peristomium,
which includes the
mouth and pharynx, make up the
annelid head. The...
-
filter feeders with no
buccal organ. The
prostomium is
fused with the
peristomium and
bears a ring of
feathery feeding tentacles. They live in parchment-like...
-
lower ligules. It is also
without a collar-like
structure around the
peristomium. Sand or
rocks in
intertidal and
shallow marine waters.
Pacific Ocean...
- have a
primarily sensory purpose. A pair of eyes are also present. The
peristomium is
probably reduced to a cir****oral ring. The
pygidium is
usually bilobed...
-
triangular anterior lobe—the prostomium—and a
posterior ring-like portion—the
peristomium. The
latter bears four
pairs of
tentacular cirri,
dorsally two pairs...
-
earthworm to
prevent escape. The
planarians cover, or cap, the prostomium,
peristomium, and
anterior end to stop the
violent reaction by the earthworm. To feed...
-
Parapodia are
mostly biramous (only the
first two
pairs are uniramous).
Peristomium fused with the
first body segment, with
usually two
pairs of tentacular...
-
species it is more continuous. The
mouth of
polychaetes is
located on the
peristomium, the
segment behind the prostomium, and
varies in form
depending on their...
