Which of the Following is a Correct Statement Regarding Cnidarians

Question

Which of the following is a correct statement regarding cnidarians?
A) They are less highly organized than sponges.
B) They have an ectoderm only (no endoderm).
C) They have a nerve net.
D) They have true muscle cells.
E) They do not have a hydrostatic skeleton.

Accepted Answer

Cnidarians, such as jellyfish, have a simple nervous system known as a nerve net, which allows for the coordination of movements and responses to the environment. Unlike more complex organisms, they do not have a centralized nervous system, but the nerve net serves as a basic means for conducting signals across their body.