When Unrelated Organisms Living Under Similar Environmental Demands Evolve Superficially

question 6

Multiple Choice

When unrelated organisms living under similar environmental demands evolve superficially similar structures, it is called

• A) superficial selection.
• B) comparative anatomy.
• C) coevolution.
• D) convergent evolution.

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Definitions:

Amygdala

A part of the brain within the temporal lobe that plays key roles in processing emotions such as fear, anger, and pleasure.

Endorphins

Naturally occurring peptides in the brain that act as neurotransmitters to reduce the perception of pain and can induce feelings of pleasure or euphoria.

Glial Cells

Non-neuronal cells in the nervous system that support, protect, and provide a scaffold for neurons.

Myelin

A fatty substance that wraps around neurons, increasing the speed at which electrical impulses are passed along the nerve cells.