One Characteristic of the Class Holothuroidea Is That They

question 61

Multiple Choice

One characteristic of the class Holothuroidea is that they:

• A) are predators that consume partially digested prey.
• B) are mostly extinct species.
• C) have a reduced endoskeleton consisting of microscopic plates embedded in the body wall.
• D) have moveable spines that are used to facilitate locomotion.
• E) have a distinct central disk with very long, slender arms.

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Definitions:

Back Problems

Issues or disorders affecting the spine or back muscles, often causing pain and discomfort.

Degeneration

The process of deterioration or decline in quality, function, or condition, often related to organs, tissues, or cells in the body.

Warm Up

The practice of preparing the body for physical activity by gradually increasing the heart rate and circulation; this also loosens the joints and increases blood flow to the muscles.

Stretching

A form of physical exercise aimed at improving flexibility and muscle elasticity by lengthening specific muscles or tendons.