Classification

question 105

Essay

Classification.Answer the questions in reference to the five animal groups listed below.
a.sponges
b.cnidarians
c.flatworms
d.roundworms
e.annelids
-Members of this group have a pseudocoelomic body cavity.

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Definitions:

Sympathetic Nervous System

Part of the autonomic nervous system that activates what is often termed the fight or flight response, preparing the body for rapid action in response to a threat.

Parasympathetic Nervous System

Part of the autonomic nervous system that conserves energy and restores the body to a state of calm.

Central Nervous System

The part of the nervous system comprising the brain and spinal cord, responsible for processing and sending out nervous signals.

General Adaptation Syndrome

A three-phase response pattern to stress described by Hans Selye, consisting of alarm, resistance, and exhaustion stages.