Organisms with True Radial Symmetry

question 16

Multiple Choice

Organisms with true radial symmetry

• A) have their sense organs, mouth, and brain clustered in the head.
• B) tend to be highly mobile.
• C) do not have a distinct head region and tend to be sedentary or passive drifters.
• D) can be divided into two matching halves along only one plane.

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Definitions:

Avoidance Learning

A learning process in which an individual learns a behavior or response to avoid an unpleasant or harmful stimulus.

Aversive Event

An unpleasant or undesirable event that causes a negative reaction in an individual, often used in psychology to study behaviors and conditioning.

Organism

A living entity that can function independently, including animals, plants, fungi, microorganisms, and in some contexts, viruses.

Punishment Learning

A form of learning in which an undesirable behavior decreases in frequency because it is followed by an unpleasant stimulus.