Question 1

The small,closeable openings in leaves and stems that allow for gas exchange are called _______.

Accepted Answer

The answer of The small,closeable openings in leaves and stems...

Question 2

In mosses,haploid unicellular spores are produced in the sporangia via

Accepted Answer

A)  mitosis. 
B)  fertilization. 
C)  conjugation. 
D)  meiosis. 
E)  budding. 
A)  mitosis. 
B)  fertilization. 
C)  conjugation. 
D)  meiosis. 
E)  budding.

Question 3

In angiosperms,two male gametes contained within a single male gametophyte participate in fertilization.One sperm nucleus combines with the egg to produce a diploid zygote,and the other sperm nucleus combines with two other haploid nuclei of the female gametophyte.This process is called

Accepted Answer

A)  biparental inheritance. 
B)  multiple paternity. 
C)  double fertilization. 
D)  dihybrid cross. 
E)  single fertilization. 
A)  biparental inheritance. 
B)  multiple paternity. 
C)  double fertilization. 
D)  dihybrid cross. 
E)  single fertilization.

Question 4

Which group has gametophytes that are green,leaflike layers that lie flat on the ground?

Accepted Answer

A)  Liverworts 
B)  Hornworts 
C)  Mosses 
D)  Stoneworts 
E)  Horsetails 
A)  Liverworts 
B)  Hornworts 
C)  Mosses 
D)  Stoneworts 
E)  Horsetails

Question 5

The most abundant gymnosperms today are the cone-bearing plants,such as pines.These plants are classified as the

Accepted Answer

A)  cycads. 
B)  ginkgos. 
C)  gnetophytes. 
D)  conifers. 
E)  lycophytes. 
A)  cycads. 
B)  ginkgos. 
C)  gnetophytes. 
D)  conifers. 
E)  lycophytes.

Question 6

The monophyletic group known as the _______ includes land plants and closely related groups of green algae.

Accepted Answer

The answer of The monophyletic group known as the _______...

Question 7

The _______ are the sister group to the hornworts.

Accepted Answer

The answer of The _______ are the sister group to...

Question 8

Strawberries,apples,and pears have parts in addition to the carpel and seeds and are thus considered to be

Accepted Answer

A)  aggregate fruits. 
B)  drupes. 
C)  multiple fruits. 
D)  accessory fruits. 
E)  simple fruits. 
A)  aggregate fruits. 
B)  drupes. 
C)  multiple fruits. 
D)  accessory fruits. 
E)  simple fruits.

Question 9

The nonvascular land plants (liverworts,mosses,and hornworts)are considered to be

Accepted Answer

A)  a monophyletic group. 
B)  a polyphyletic group. 
C)  a paraphyletic group. 
D)  closely related to the glaucophytes. 
E)  the most highly derived (evolved)of the plants. 
A)  a monophyletic group. 
B)  a polyphyletic group. 
C)  a paraphyletic group. 
D)  closely related to the glaucophytes. 
E)  the most highly derived (evolved)of the plants.

Question 10

If lignin-containing cell walls had not evolved in land plants,we might now be seeing

Accepted Answer

A)  fields of tall plants that lack stomata but have rhizoids. 
B)  forests of tall animals instead of tall plants on the planet. 
C)  plants that grow underground instead of growing tall. 
D)  the same plant communities that we have now,because they still have cellulose walls. 
E)  land areas of the planet covered with mats of low-lying plants and no trees. 
A)  fields of tall plants that lack stomata but have rhizoids. 
B)  forests of tall animals instead of tall plants on the planet. 
C)  plants that grow underground instead of growing tall. 
D)  the same plant communities that we have now,because they still have cellulose walls. 
E)  land areas of the planet covered with mats of low-lying plants and no trees.

Exam 21: The Evolution of Plants

The small,closeable openings in leaves and stems that allow for gas exchange are called _______.

In mosses,haploid unicellular spores are produced in the sporangia via

In angiosperms,two male gametes contained within a single male gametophyte participate in fertilization.One sperm nucleus combines with the egg to produce a diploid zygote,and the other sperm nucleus combines with two other haploid nuclei of the female gametophyte.This process is called

Which group has gametophytes that are green,leaflike layers that lie flat on the ground?

The most abundant gymnosperms today are the cone-bearing plants,such as pines.These plants are classified as the

The monophyletic group known as the _______ includes land plants and closely related groups of green algae.

The _______ are the sister group to the hornworts.

Strawberries,apples,and pears have parts in addition to the carpel and seeds and are thus considered to be

The nonvascular land plants (liverworts,mosses,and hornworts)are considered to be

If lignin-containing cell walls had not evolved in land plants,we might now be seeing

Introduction

The Chemistry and Energy of Life

Nucleic Acids, Proteins, and Enzymes

Cells: the Working Units of Life

Cell Membranes and Signaling

Pathways That Harvest and Store Chemical Energy

The Cell Cycle and Cell Division

Inheritance, Genes, and Chromosomes

DNA and Its Role in Heredity

From Dna to Protein: Gene Expression

Regulation of Gene Expression

Genomes

Biotechnology

Genes, Development, and Evolution

Processes of Evolution

Reconstructing and Using Phylogenies

Speciation

The History of Life on Earth

Bacteria, Archaea, and Viruses

The Origin and Diversification of Eukaryotes

The Evolution and Diversity of Fungi

Animal Origins and Diversity

The Plant Body

Plant Nutrition and Transport

Plant Growth and Development

Reproduction of Flowering Plants

Plants in the Environment

Fundamentals of Animal Function

Nutrition and Digestion

Breathing

Circulation

Muscle and Movement

Neurons, Sense Organs, and Nervous Systems

Nervous and Endocrine Control

Water and Salts: Excretion

Animal Reproduction

Animal Development

Immunology: Animal Defense Systems

Animal Behavior

The Distribution of Earths Ecological Systems

Populations

Ecological and Evolutionary Consequences of Interactions Within and Among Species

Ecological Communities

The Global Ecosystem

Filters