Considering the Phylogenetic Evidence of Feather Evolution, All of the Following

question 34

Multiple Choice

Considering the phylogenetic evidence of feather evolution, all of the following might have been original functions of feathers EXCEPT

• A) heat retention.
• B) flight.
• C) waterproofing.
• D) shielding from sunlight.

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Definitions:

Hypothalamic Functions

The roles performed by the hypothalamus, including regulation of temperature, hunger, thirst, sleep, and emotional activity.

Cell Nucleus

The membrane-bound organelle in eukaryotic cells that contains DNA, responsible for regulating gene expression and cell division.

Neuron

The fundamental unit of the nervous system, responsible for transmitting information through electrical and chemical signals.

Nervous System

The complex network of nerve cells and fibers that transmits nerve impulses between parts of the body, overseeing both voluntary actions and involuntary responses.