Chapter 25

In plants, fibers are a type of cell. a. parenchyma c. collenchyma b. sclerenchyma d. mesophyll

Ground tissue consists mainly of a. waxes and cutin c. parenchyma cells b. lignified cell walls d. cork but not bark

Which of the following cell types stay alive when they mature? Choose all that apply. a. companion cells c. tracheids b. sieve elements d. vessel elements

All of the vascular bundles inside a typical arranged in a ring. a. monocot stem c. monocot root b. eudicot stem d. eudicot root

True or false? Lateral roots form at nodes on roots.

Epidermis and periderm are tissues. a. ground b. vascular c. dermal

A vascular bundle in a leaf is called a. xylem b. mesophyll c. a vein

Typically, vascular tissue is organized as in stems and as \(\quad\) in roots. a. multiple vascular bundles; one vascular cylinder b. one vascular bundle; multiple vascular cylinders c. one vascular cylinder; multiple vascular bundles d. multiple vascular cylinders; one vascular bundle

An onion is a a. root c. bulb b. stem d. corm

In a(n) \(\quad\), the primary root is typically the largest. a. lateral meristem \(c\), fibrous root system b. adventitious root system d. taproot system

The main function of root hairs is to a. conduct water from cortex to aboveground shoots b. increase the root's surface area for absorption c. anchor the plant in soil

Roots and shoots lengthen through activity at a. apical meristems c. vascular cambium b. lateral meristems d. cork cambium

The activity of lateral meristems older roots and stems. a. lengthens b. thickens c. both a and b

Tree rings occur because a. there are droughts during the time the rings form b. environmental conditions influence xylem cell size c. heartwood alternates with sapwood d. periderm replaces epidermis

Match the plant parts with the best description. vascular cambium \(\quad\) a. ground tissue mesophyll \(\quad\) b. type of stem wood c. a lateral meristem cortex d. photosynthetic parenchyma potato e. secondary xylem parallel veins \(\mathrm{f}\), formed by epidermal cells stomata g. characteristic of monocor leaves