• A taproot is a large primary root. A fibrous root system has many small branching roots. Adventitious roots are specialized roots that grow from uncommon places.

• Roots are made up of root caps, apical meristems, and root hairs.

• Primary growth in roots occurs at the root tip. Secondary growth occurs when a vascular cambium forms between primary xylem and primary phloem.

• Roots anchor the plant and store and absorb water and mineral nutrients from the soil.

Vocabulary taproot (p. 587) fibrous root system (p. 587)

adventitious root (p. 588) root cap (p. 588) root hair (p. 588)

cortex (p. 589) macronutrient (p. 590) endodermis (p. 589) micronutrient (p. 590) pericycle (p. 590)

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