Figure 38-1 Based on the Data in the Accompanying

question 28

Multiple Choice

Figure 38-1 Based on the data in the accompanying figure, the condition that results in root development is:

• A) a high ratio of auxin to cytokinin.
• B) a low ratio of auxin to cytokinin.
• C) a relatively equal proportion of auxin to cytokinin.
• D) cytokinin levels of at least 0.2 mg/L.
• E) auxin concentrations of 0.5 mg/L.

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Definitions:

Microliths

Small stone tools, typically made by prehistoric peoples, used as spear points or in other sharp implements.

Flint

A hard, sedimentary cryptocrystalline form of the mineral quartz, historically used to make tools and weapons due to its ability to be chipped into sharp edges.

Farming Populations

Communities or groups of people primarily engaged in agricultural activities and the cultivation of food and crops.

Fertility

The natural capability of giving life; in humans, it refers to the ability to reproduce.