Red-Backed Salamanders (Plethodon Cinereus) Occur Simultaneously in Several Different Color

question 11

Multiple Choice

Red-backed salamanders (Plethodon cinereus) occur simultaneously in several different color morphs in nature. Individuals may be red backed (having a red stripe down the back) , lead backed (a blackish stripe) and erocrystic (a yellow stripe) . If these color morphs conferred differing fitness levels in differing environments, this would be considered an example of

• A) phenotypic plasticity.
• B) phenotypic trade-off.
• C) spatial variation.
• D) temporal variation.

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Definitions:

Hyperventilates

The condition of breathing at an abnormally rapid rate, leading to excessive loss of carbon dioxide.

Trachea

The windpipe; a tube that connects the pharynx and larynx to the lungs, allowing the passage of air.

Epiglottis

Structure that covers the glottis, the air-tract opening, during the process of swallowing.

Bronchioles

The small passages in the lungs that lead from the bronchi to the alveoli, involved in the process of breathing.