As a New Curator for a Large Public Aquarium in Your

question 21

Multiple Choice

As a new curator for a large public aquarium in your city,you are in charge of correctly identifying some of the animals presently in your care.You have two adult animals in tanks in front of you,and you know that one is a lamprey,and the other is a hagfish.Which feature would allow you to correctly identify each animal?

• A)Lampreys lack jaws,but hagfish are jawed fish.
• B)Lampreys are parasitic,while hagfish are not parasitic.
• C)Hagfish must live in fresh water,while lampreys are entirely marine.
• D)Hagfish are noted for their extensive fins,while lampreys lack fins.

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Definitions:

Defense Mechanisms

Psychological strategies employed unconsciously to protect oneself from anxiety-arising thoughts or feelings.

Threatening Impulses

Internal urges or desires that are perceived as a danger or threat to one's well-being or the social order.

Ego

The ego, in psychology, represents the realistic part of the mind that mediates between the desires of the id, the moralizing role of the superego, and the external world.

Psychosexual Stages

A Freudian theory that developmental stages beginning in infancy during which the pleasure-seeking energies of the id become focused on certain erogenous zones.