Which of the following statements about hydra morphology is correct?
A) The hydra has a long single tentacle containing numerous nematocysts.
B) The hydra has a single polyp that is filled with gas and keeps the organism afloat.
C) The hydra is bell shaped and has multiple tentacles.
D) The hydra is a tube-shaped polyp that has two layers of tissue.
E) The hydra is bilaterally symmetrical.

Question

Quizplus · Accepted Answer

Hydras are tube-shaped polyps with two main layers of tissue: an outer epidermis and an inner gastrodermis, which enclose a central digestive compartment, the gastrovascular cavity.

Which of the Following Statements About Hydra Morphology Is Correct