The Characteristic That Best Defines Placozoans as Animals Is That

question 210

Multiple Choice

The characteristic that best defines placozoans as animals is that they

• A) are structurally simple with only a few distinct cell types.
• B) lack a nervous system but have a nerve net.
• C) have two surface layers with a layer of contractile fibers in between them.
• D) are transparent and small in size.
• E) are marine organisms.

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Definitions:

Bass Voice

The lowest adult male singing voice, characterized by its low pitch range.

Cochlea

A spiral-shaped, fluid-filled inner ear structure that is essential for translating sound into nerve impulses sent to the brain.

Nerve Impulses

Electrical signals that are transmitted along neurons, enabling communication within the nervous system.

Fluid-Filled Tube

A tube that contains a liquid which can be used in various mechanical or biological systems.