How are the nervous systems of a flatworm and a fish different?
a. One responds to stimuli in the environment and the other does not.
b. One responds to stimuli in the environment and the other does not.
c. One is a loose network of connected neurons without centers of integration, and one has ganglia in which integration can occur.
d. One is a loose network of connected neurons without centers of integration, and one has ganglia in which integration can occur.
One has a brain with a forebrain, a midbrain, and a hindbrain, and the other has ganglia in which integration can occur.
One has a brain with a forebrain, a midbrain, and a hindbrain, and the other has ganglia in which integration can occur.
One has nerve cells with axons and the other does not.
