A Hydra Moves by

question 36

Multiple Choice

A hydra moves by

• A)nematocysts.
• B)expelling water from the gastrovascular cavity.
• C)contraction of the nerve net.
• D)epitheliomuscular cells in the epidermis.
• E)epitheliomuscular fibers in the mesoglea.

---

Definitions:

Acetaldehyde

A colorless volatile compound with a pungent odor, used in the manufacture of acetic acid, perfumes, and flavors.

Deprotonated

Refers to the removal of a proton (H+) from a molecule, resulting in the formation of a negatively charged ion.

Resonance

A phenomenon in chemistry where a molecule or ion can be represented by two or more equivalent structures, indicating the delocalization of electrons.

Anion

A negatively charged ion, which has more electrons than protons.