Consider Again the Civilization Described in the Previous Question

question 3

Multiple Choice

Consider again the civilization described in the previous question. (They live on a planet orbiting 10 AU from a close binary star system that consists of a 15 MSᵤn red giant star and a 10 MSᵤn black hole surrounded by an accretion disk.) Through a bizarre (and scientifically unexplainable) fluctuation in the space-time continuum, a copy of a book from that civilization arrives on your desk; it is entitled Iguoonos: How We Evolved. In the first chapter, you learn that these beings evolved from organisms that lived 5 billion years ago. Which of the following statements should you expect to find as you continue to read this book?

• A) They evolved on a different planet in a different star system, and moved to their current location.
• B) As a result of traumatic experiences to their evolutionary ancestors, they dislike television.
• C) Their immediate ancestors were chimpanzees.
• D) They believe that the presence of two stars in their system was critical to their evolution.
• E) They evolved from primitive wormlike creatures that had 13 legs, 4 eyes, and bald heads, thus explaining why such critters are now considered a spectacular delicacy.

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Definitions:

Avascular

Referring to tissues that lack blood vessels, and thereby depend on diffusion for nutrient and waste exchange.

Cell Junctions

Specialized structures in cells that connect them to one another, enabling communication and the formation of tissue structures.

Cell Layers

Stacked tiers of cells that form tissues in organisms, each having specific functions and structures.

General Shape

A term referring to the basic geometric or visual form of an object.