Which Organisms Have a Hydrostatic Skeleton with a Soft Body

question 9

Multiple Choice

Which organisms have a hydrostatic skeleton with a soft body wall?

• A)earthworms
• B)spiders
• C)sponges
• D)crabs
• E)insects

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Definitions:

Freud

Sigmund Freud, an Austrian neurologist who established psychoanalysis, a technique for addressing mental disorders through conversations between a patient and a psychoanalyst.

Reality Principle

The concept in psychoanalytic theory that the mind functions to perceive and adapt to the external world, balancing the demands of the id and the superego.

Ego

In psychoanalytic theory, the part of the mind that mediates between the conscious and the unconscious, responsible for reality testing and a sense of personal identity.

Id's Desires

Refers to the component of Sigmund Freud's personality theory containing the primitive and instinctive behaviors and urges.