Chapter 27

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

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

Which of the following cell types remain alive in mature tissue? Choose all that apply. a. companion cells b. sieve elements c. parenchyma cells d. cork but not bark

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

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 __________ 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 __________ (choose all that apply). a. root b. stem c. bulb d. corm

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

Root hairs __________. 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 b. lateral meristems c. vascular cambium 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. $$\begin{array}{cc}\text{__________ vascular cambium} && \text {a. ground tissue}\end{array}$$ $$\begin{array}{cc}\text{__________mesophyll} && \text {b. stem structure}\end{array}$$ $$\begin{array}{cc}\text{__________wood} && \text {c. a lateral meristem}\end{array}$$ $$\begin{array}{cc}\text{__________cortex} && \text {d. photosynthetic parenchyma}\end{array}$$ $$\begin{array}{cc}\text{__________potato} && \text {e. secondary xylem}\end{array}$$ $$\begin{array}{cc}\text{__________parallel veins} && \text {f. between epidermal cells}\end{array}$$ $$\begin{array}{cc}\text{__________stoma} && \text {g. characteristic of monocot leaves}\end{array}$$