Question 1

Leaf blades are produced through the activity of marginal blastozones.

Accepted Answer

A) True 
 B)False

Question 2

Which of the following statements about bundle-sheath extensions is FALSE?

Accepted Answer

A) They provide mechanical support for the leaf. 
B) They interconnect all the bundle sheaths in a leaf. 
C) They may conduct water from the xylem to the epidermis. 
D) They consist of mesophyll cells. 
E) They form connections between bundle sheaths and the epidermis. 
A) They provide mechanical support for the leaf. 
B) They interconnect all the bundle sheaths in a leaf. 
C) They may conduct water from the xylem to the epidermis. 
D) They consist of mesophyll cells. 
E) They form connections between bundle sheaths and the epidermis.

Question 3

Which of the following is(are) NOT produced by the shoot apical meristem?

Accepted Answer

A) leaf primordia 
B) a protective covering 
C) bud primordia 
D) phytomeres 
E) cells of the primary plant body 
A) leaf primordia 
B) a protective covering 
C) bud primordia 
D) phytomeres 
E) cells of the primary plant body

Question 4

A bulb is different from a corm in that a bulb:

Accepted Answer

A) has thinner leaves. 
B) has a larger stem. 
C) has a fleshy stem 
D) stores food in its leaves. 
E) stores food in its stem. 
A) has thinner leaves. 
B) has a larger stem. 
C) has a fleshy stem 
D) stores food in its leaves. 
E) stores food in its stem.

Question 5

Which of the following statements about bulliform cells is FALSE?

Accepted Answer

A) They are found in monocots. 
B) They are large mesophyll cells. 
C) They are arranged in longitudinal rows. 
D) They become flaccid during excessive water loss. 
E) They play a role in leaf folding and unfolding. 
A) They are found in monocots. 
B) They are large mesophyll cells. 
C) They are arranged in longitudinal rows. 
D) They become flaccid during excessive water loss. 
E) They play a role in leaf folding and unfolding.

Question 6

In monocot leaves, the midvein and other large veins develop at the tip of the primordium and develop downward.

Accepted Answer

A) True 
 B)False

Question 7

The homeotic mutation that results in "double flowers" in some rose varieties causes ______ to be converted into ______.

Accepted Answer

A) sepals; carpels 
B) petals; stamens 
C) stamens; carpels 
D) petals; sepals 
E) stamens; petals 
A) sepals; carpels 
B) petals; stamens 
C) stamens; carpels 
D) petals; sepals 
E) stamens; petals

Question 8

The edible portion of an Irish potato is a:

Accepted Answer

A) rhizome. 
B) tuber. 
C) corm. 
D) modified root. 
E) cladophyll. 
A) rhizome. 
B) tuber. 
C) corm. 
D) modified root. 
E) cladophyll.

Question 9

In eudicots, the major veins develop toward the ______ and the minor veins develop toward the ______.

Accepted Answer

A) leaf base; leaf margins 
B) leaf margins; leaf base 
C) leaf base; leaf base 
D) leaf margins; leaf margins and leaf base 
E) leaf base and leaf margins; leaf base 
A) leaf base; leaf margins 
B) leaf margins; leaf base 
C) leaf base; leaf base 
D) leaf margins; leaf margins and leaf base 
E) leaf base and leaf margins; leaf base

Question 10

Which of the following statements about the Tilia stem is FALSE?

Accepted Answer

A) The pith contains parenchyma and mucilage ducts. 
B) The cortex contains collenchyma and parenchyma. 
C) The xylem is located outside the phloem. 
D) The epidermis is a single layer of cells. 
E) The vascular bundles are separated by interfascicular parenchyma. 
A) The pith contains parenchyma and mucilage ducts. 
B) The cortex contains collenchyma and parenchyma. 
C) The xylem is located outside the phloem. 
D) The epidermis is a single layer of cells. 
E) The vascular bundles are separated by interfascicular parenchyma.

Question 11

In the Arabidopsis shoot apical meristem, the CLAVATA genes promote initial-cell function.

Accepted Answer

A) True 
 B)False

Question 12

The abscission zone consists of three layers: the separation layer, the protective layer, and the layer of cell division.

Accepted Answer

A) True 
 B)False

Question 13

A spine is a modified:

Accepted Answer

A) branch. 
B) leaf. 
C) epidermal hair. 
D) stem. 
E) flower. 
A) branch. 
B) leaf. 
C) epidermal hair. 
D) stem. 
E) flower.

Question 14

A stolon is a modified, aboveground root.

Accepted Answer

A) True 
 B)False

Question 15

In the angiosperm shoot apex, the corpus and overlying tunica constitute the:

Accepted Answer

A) pith meristem. 
B) peripheral meristem. 
C) intercalary meristem. 
D) central zone. 
E) meristematic cap. 
A) pith meristem. 
B) peripheral meristem. 
C) intercalary meristem. 
D) central zone. 
E) meristematic cap.

Question 16

By definition, a plant having leaflets has simple leaves.

Accepted Answer

A) True 
 B)False

Question 17

A prickle is a modification of:

Accepted Answer

A) a branch. 
B) a leaf. 
C) the epidermis. 
D) a stem. 
E) a flower. 
A) a branch. 
B) a leaf. 
C) the epidermis. 
D) a stem. 
E) a flower.

Question 18

In the transition region, there is a small but significant interruption between the vascular tissues of the root and the shoot.

Accepted Answer

A) True 
 B)False

Question 19

The auxin-based model of phyllotaxy states that auxin:

Accepted Answer

A) in young primordia lower the auxin concentration in neighboring cells. 
B) in older primordia stimulate internode elongation. 
C) causes the tunica to buckle. 
D) in young primordia raises the auxin concentration in neighboring cells. 
E) in the apical meristem stimulates cells to divide. 
A) in young primordia lower the auxin concentration in neighboring cells. 
B) in older primordia stimulate internode elongation. 
C) causes the tunica to buckle. 
D) in young primordia raises the auxin concentration in neighboring cells. 
E) in the apical meristem stimulates cells to divide.

Question 20

MADS box genes are a class of sequences that includes homeotic genes.

Accepted Answer

A) True 
 B)False

Exam 25: The Shoot: Primary Structure and Development

Leaf blades are produced through the activity of marginal blastozones.

Which of the following statements about bundle-sheath extensions is FALSE?

Which of the following is(are) NOT produced by the shoot apical meristem?

A bulb is different from a corm in that a bulb:

Which of the following statements about bulliform cells is FALSE?

In monocot leaves, the midvein and other large veins develop at the tip of the primordium and develop downward.

The homeotic mutation that results in "double flowers" in some rose varieties causes ______ to be converted into ______.

The edible portion of an Irish potato is a:

In eudicots, the major veins develop toward the ______ and the minor veins develop toward the ______.

Which of the following statements about the Tilia stem is FALSE?

In the Arabidopsis shoot apical meristem, the CLAVATA genes promote initial-cell function.

The abscission zone consists of three layers: the separation layer, the protective layer, and the layer of cell division.

A spine is a modified:

A stolon is a modified, aboveground root.

In the angiosperm shoot apex, the corpus and overlying tunica constitute the:

By definition, a plant having leaflets has simple leaves.

A prickle is a modification of:

In the transition region, there is a small but significant interruption between the vascular tissues of the root and the shoot.

The auxin-based model of phyllotaxy states that auxin:

MADS box genes are a class of sequences that includes homeotic genes.

Botany: an Introduction

The Molecular Composition of Plant Cells

The Plant Cell and the Cell Cycle

The Movement of Substances Into and Out of Cells

The Flow of Energy

Respiration

Photosynthesis, Light, and Life

Sexual Reproduction and Heredity

The Chemistry of Heredity and Gene Expression

Recombinant Dna Technology, Plant Biotechnology, and Genomics

The Process of Evolution

Systematics: the Science of Biological Diversity

Prokaryotes and Viruses

Fungi

Protists: Algae and Heterotrophic Protists

Bryophytes

Seedless Vascular Plants

Gymnosperms

Introduction to the Angiosperms

Evolution of the Angiosperms

Plants and People

Early Development of the Plant Body

Cells and Tissues of the Plant Body

The Root: Structure and Development

Secondary Growth in Stems

Regulating Growth and Development: the Plant Hormones

External Factors and Plant Growth

Plant Nutrition and Soils

The Movement of Water and Solutes in Plants

The Dynamics of Communities and Ecosystems

Global Ecology

Filters

The homeotic mutation that results in "double flowers" in some rose varieties causes to be converted into .

In eudicots, the major veins develop toward the and the minor veins develop toward the .