Which of the following statements about hydra is false?

Molecular data confirm that cnidarians branched off from the rest of animals before ________ evolved.

Sponges are protected by _____________________________.

Collar cells are a characteristic of:

The ___________________________ gives rise to muscles, bones, and the circulatory system.

Which of the following best describes the nervous system of Hydra?

Segmentation can enhance movement and locomotion.

The process in which a definite head and brain evolves is called cephalization.

Which of the following is a Cnidarian?

When an animal body is dissected so that the dorsal region and ventral region are separated it is called: