Chapter 9 Review Plants at Work

One thick root that grows larger than the other roots

• fibrous roots

• taproot

Many small, thin roots

• fibrous roots

• taproot

A thin outer layer of cells. Root hairs are attached.

• cortex

• epidermis

• inner layer

Tiny hairlike structure on the outer layer of a root.

• epidermis

• taproot

• root hair

The second layer of a root made of soft loose tissue. Food made during photosynthesis is stored here.

• inner layer

• cortex

• Epidermis

A type of tissue that carries water up a plant to the leaves.

• xylem

• phloem

A type of tissue that carries food from the leaves to the other plant parts.

• xylem

• phloem

The mass of cells that covers and protects a root tip.

• root cap

• vein

• stoma

A smooth, soft, and green stem. Lasts for one season.

• herbaceous stem

• woody stem

A hard stem that is not green. Lasts for many seasons.

• herbaceous stem

• woody stem