The Following Questions Refer to the Evolutionary Tree in Figure

question 45

Multiple Choice

The following questions refer to the evolutionary tree in Figure 22.2.
The horizontal axis of the cladogram depicted below is a timeline that extends from 100,000 years ago to the present; the vertical axis represents nothing in particular. The labeled branch points on the tree (V-Z) represent various common ancestors. Let's say that only since 50,000 years ago has there been enough variation between the lineages depicted here to separate them into distinct species, and only the tips of the lineages on this tree represent distinct species.

Figure 22.2
-According to this tree, what percent of the species seem to be extant (in other words, not extinct) ?

• A) 25%
• B) 33%
• C) 50%
• D) 66%
• E) 75%

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Definitions:

Purchasing-Power Parity

An economic theory that compares different countries' currencies through a basket of goods approach, to evaluate the relative purchasing power.

Aruban Florin

The currency of Aruba, symbolized as Afl., used within its economic transactions.

Thai Bhat

The currency of Thailand.

Appreciated

Describes an increase in value of an asset or currency over time, often due to economic factors.