The evolution of a true brain (superganglion) occurred in
a. animals with radial symmetry.
b. animals with bilateral symmetry
c. cnidarians.
d. echinoderms.
e. all animals having symmetry.
B
You might also like to view...
Muscle fibers are basically a collection of
A) synapses. B) muscles. C) sarcomeres. D) connective tissue fibers.
The skeletal muscle shortens during concentric, isotonic contraction
Indicate whether the statement is true or false
Which of the following describes the plasma membrane?
A) A single layer of phospholipids forms the membrane. B) A bilayer of phospholipids forms the membrane. C) A double layer of protein forms the membrane. D) The membrane is made up of cristae.
The ureter expands into the substance of the kidney as the ________.
A. renal corpuscle B. hilum C. renal capsule D. renal pyramid E. renal pelvis