tissue that develops from the mesoderm. It separates the
body wall from the inner organs.
Coelom
a body cavity that is not completely surrounded by
mesoderm-derived tissue.
Pseudocoelom
,the concentration of sensory organs and nervous tissue in
a defined head region of the body.
Cephalization
During their development, insects undergo ???, a radical
change from a juvenile body form to an adult body form
Metamorphosis
,In organisms with an open circulatory system, blood
empties into the ??? where it bathes the internal organs
directly.
hemocoel
Animals lack a cell wall- True or False?
True
, One trend in the evolution of animals is the increase in the
number of tissue (germ) layers during embryonic
development. Flatworms and more complex animals have
________ layers.
3
Most animal phyla are radially symmetrical. True or False?
False