Bio2-FINAL-7

Which of the following is NOT a modified stem?

A bract

Which of the following is a modified stem?

A rhizome a tuber a stolon

A plant that produces two axillary buds at a node is said to have what type of leaf arrangement?

Opposite

Which is the correct sequence of cell types encountered in an oak tree, moving from the center of the tree out?

Pith, primary xylem, secondary xylem, vascular cambium, secondary phloem, primary phloem, cork cambium, cork

Which of the following statements is NOT true of the stems of vascular plants?

Primary growth occurs only at the shoot apical meristem.

Which cells lack living protoplasts at maturity?

Sclerenchyma

Which of the following statements is true of the stems of vascular plants?

Stems are composed of repeating segments, including nodes and internodes. Vascular tissues may be arranged on the outside of the stem or scattered throughout the stem. Stems can contain stomata.

Trees close to water sources can be killed due to the feeding habits of beaver. The beaver may not fell the tree, but the tree may be killed when the beaver feeds on the bark and deeper plant tissues of the tree trunk. To which tissue is the beaver most likely doing damage that causes the tree to die?

Vascular cambium

A bract is

a leaf.

One function of stomata is to

allow carbon dioxide absorption.

Root hairs and lateral roots are similar in each respect

both increase the absorptive surface area of the root system. both are multicellular. both are not long lived

Plant organs form by

cell division in meristematic tissue.

Xylem—

conducts mineral nutrients and water

In vascular plants, one difference between root and shoot systems is that root systems

contain pronounced zones of cell elongation, whereas shoot systems do not.

Palisade and spongy parenchyma are typically found in the mesophyll of

eudicots.

Root hairs form in the zone(s) of

maturation.

A unique feature of plants is indeterminate growth. Indeterminate growth is possible because

meristematic cells continually replace themselves.

Roots differ from stems in that roots lack

nodes.

The ground tissue that carries out most metabolic and storage functions is

parenchyma cells.

Collenchyma—

performs photosynthesis

Trichomes—

reduce evaporation

Structures that allow some plants to carry out photosynthesis below the ground include

rhizomes. chloroplast-rich root dermal cells. window leaves. tubers.

You can determine the age of an oak tree by counting the annual rings of _______________ formed by the ____________.

secondary xylem; vascular cambium

The food-conducting cells in an oak tree are called

sieve-tube members.

In vascular plant leaves, gases enter and leave the plant through pores called

stomata.

The repeating unit of the vegetative shoot contains all of the following

the internode. leaves. axillary buds.

Leaves are an extension of

the shoot apical meristem.

Plant cell types can be distinguished by all of the following

vacuole size. cell-wall thickness. vitality at maturity.

The regulation of water flow laterally between the vascular tissue and cell layers in the outer portion of the root is performed by the

xylem.