-
hypothesis include:[citation needed] The
acoelomate theory,
which states that
coelom evolved from an
acoelomate ancestor. The
enterocoel theory,
which states...
-
digestive tracts with a
separate mouth and ****. Some
bilaterians (the
acoelomates) lack body cavities,
while others have a
primary body
cavity derived...
-
Limnognathia maerski is a
microscopic acoelomate freshwater animal,
discovered living in cold
springs on
Disko Island, Greenland, in 1994.
Since then,...
-
three germ layers: ectoderm, endoderm, and mesoderm).
Their body plan is
acoelomate – they lack a
coelom – do not have a true body cavity. Also an excretory...
- is the most
important excretory organ. That is
particularly true for
acoelomate groups like cnidarians,
flatworms and nemerteans, who have no body cavities...
- or hairybacks, are a
group of
microscopic (0.06–3.0 mm), cylindrical,
acoelomate animals, and are
widely distributed and
abundant in
freshwater and marine...
-
spaces that
fills the
interior of the body of a flatworm,
which is an
acoelomate. This is a
spongy tissue also
known as a
mesenchymal tissue, in which...
-
endocrine system. Many of the
larvae are
acoelomate, with some
adults being pseudocoelomate, and some
remaining acoelomate.
Development is
generally direct,...
-
platyhelminthes are triploblastic, but have no
internal body
cavity (are
acoelomate), and lack
specialized circulatory and
respiratory organs, so gas exchange...
- L. H. 1951. The Invertebrates:
Platyhelminthes and
Rhynchocoela the
acoelomate Bilateria, McGraw-Hill Book Co., London, 550 p. Choate, P.M., and Dunn...
