What Is Different Between a Rooted and Unrooted Tree

question 14

Multiple Choice

What is different between a rooted and unrooted tree?

• A) An unrooted tree indicates the common ancestor from which all species on the tree are derived.
• B) Relationships on an unrooted tree are not experimentally testable.
• C) Direction on a rooted tree indicates the passage of time.
• D) Rooted trees are correct, whereas unrooted trees are incorrect.

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Definitions:

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A layer of cells surrounding the blastocyst in early pregnancy, that provides nutrients to the embryo and develops into a large part of the placenta.

Jazz Music

A genre of music originating in the African American communities of New Orleans in the late 19th and early 20th centuries, characterized by swing and blue notes, call and response vocals, polyrhythms, and improvisation.

Fetus

A prenatal human between the embryonic state and birth, typically from 9 weeks after fertilization until birth.

Trimester

A term of approximately three months, often used to divide the pregnancy period or academic year into three parts.