In Aplysia Touching the Siphon Causes the Gill to Withdraw

question 93

Multiple Choice

In Aplysia touching the siphon causes the gill to withdraw. If the siphon is touched repeatedly, eventually the gill will not withdraw anymore. This is an example of:

• A) habituation.
• B) sensitization.
• C) mere exposure learning.
• D) learned non-use.

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Definitions:

Unique Feature

a distinct characteristic or element noticeable in a person, object, or place that sets it apart from others.

Evolutionary Pathway

A sequence of genetic, structural, or functional changes that occur in a biological lineage over time leading to diversification and speciation.

Notochord

A flexible rod-like structure that provides support in all embryonic and some adult chordate animals.

Amniotic Egg

An egg with a protective amniotic membrane, enabling the embryo to develop outside the mother's body, characteristic of reptiles, birds, and certain mammals.