Question 1

All of the following cellular structures are functionally important in cells of the gametophytes of both angiosperms and gymnosperms except

Accepted Answer

A) haploid nuclei. 
B) mitochondria. 
C) cell walls. 
D) chloroplasts. 
E) peroxisomes. 
A) haploid nuclei. 
B) mitochondria. 
C) cell walls. 
D) chloroplasts. 
E) peroxisomes.

Question 2

How have fruits contributed to the success of angiosperms?

Accepted Answer

A) by nourishing the plants that make them 
B) by facilitating dispersal of seeds 
C) by attracting insects to the pollen inside 
D) by producing sperm and eggs inside a protective coat 
E) by producing triploid cells via double fertilization 
A) by nourishing the plants that make them 
B) by facilitating dispersal of seeds 
C) by attracting insects to the pollen inside 
D) by producing sperm and eggs inside a protective coat 
E) by producing triploid cells via double fertilization

Question 3

The agouti is most directly involved with the Brazil nut tree's dispersal of

Accepted Answer

A) male gametophytes. 
B) female gametophytes. 
C) sporophyte embryos. 
D) sporophyte megaspores. 
E) female gametes. 
A) male gametophytes. 
B) female gametophytes. 
C) sporophyte embryos. 
D) sporophyte megaspores. 
E) female gametes.

Question 4

Archaeopteris was heterosporous just like seed plants,but it reproduced via spores and not seeds.Transitional seedless species of vascular plants are referred to as

Accepted Answer

A) progymnosperms. 
B) proangiosperms. 
C) successional species. 
D) early gymnosperms. 
E) conifers. 
A) progymnosperms. 
B) proangiosperms. 
C) successional species. 
D) early gymnosperms. 
E) conifers.

Question 5

The generative cell of male angiosperm gametophytes is haploid.This cell divides to produce two haploid sperm cells.What type of cell division does the generative cell undergo to produce these sperm cells?

Accepted Answer

A) binary fission 
B) mitosis 
C) meiosis 
D) mitosis without subsequent cytokinesis 
E) meiosis without subsequent cytokinesis 
A) binary fission 
B) mitosis 
C) meiosis 
D) mitosis without subsequent cytokinesis 
E) meiosis without subsequent cytokinesis

Question 6

What adaptations should one expect of the seed coats of angiosperm species whose seeds are dispersed by frugivorous (fruit-eating)animals,as opposed to angiosperm species whose seeds are dispersed by other means?
1)The exterior of the seed coat should have barbs or hooks.
2)The seed coat should contain secondary compounds that irritate the lining of the animal's mouth.
3)The seed coat should be able to withstand low pH levels.
4)The seed coat,upon its complete digestion,should provide vitamins or nutrients to animals.
5)The seed coat should be resistant to the animals' digestive enzymes.

Accepted Answer

A) 4 only 
B) 1 and 2 
C) 2 and 3 
D) 3 and 5 
E) 3, 4, and 5 
A) 4 only 
B) 1 and 2 
C) 2 and 3 
D) 3 and 5 
E) 3, 4, and 5

Question 7

Which of the following statements correctly describes a portion of the pine life cycle?

Accepted Answer

A) Female gametophytes use mitosis to produce eggs. 
B) Seeds are produced in pollen-producing cones. 
C) Pollen grains contain female gametophytes. 
D) A pollen tube slowly digests its way through the triploid endosperm. 
A) Female gametophytes use mitosis to produce eggs. 
B) Seeds are produced in pollen-producing cones. 
C) Pollen grains contain female gametophytes. 
D) A pollen tube slowly digests its way through the triploid endosperm.

Question 8

Which of the following is most important in making the typical seed more resistant to adverse conditions than the typical spore?

Accepted Answer

A) a different type of sporopollenin 
B) an internal reservoir of liquid water 
C) integument(s) 
D) ability to be dispersed 
E) waxy cuticle 
A) a different type of sporopollenin 
B) an internal reservoir of liquid water 
C) integument(s) 
D) ability to be dispersed 
E) waxy cuticle

Question 9

In a typical angiosperm,what is the sequence of structures encountered by the tip of a growing pollen tube on its way to the egg?
1)micropyle
2)style
3)ovary
4)stigma

Accepted Answer

A) 4 → 2 → 3 → 1 
B) 4 → 3 → 2 → 1 
C) 1 → 4 → 2 → 3 
D) 1 → 3 → 4 → 2 
E) 3 → 2 → 4 → 1 
A) 4 → 2 → 3 → 1 
B) 4 → 3 → 2 → 1 
C) 1 → 4 → 2 → 3 
D) 1 → 3 → 4 → 2 
E) 3 → 2 → 4 → 1

Question 10

If a female orchid bee has just left a Brazil nut tree with nectar in her stomach,and if she visits only other flowers on the same tree,the result should be

Accepted Answer

A) pollination. 
B) more nectar in her stomach. 
C) more pollen in her pollen basket. 
D) Three of the responses above are correct. 
E) Two of the responses above are correct. 
A) pollination. 
B) more nectar in her stomach. 
C) more pollen in her pollen basket. 
D) Three of the responses above are correct. 
E) Two of the responses above are correct.

Question 11

If all agoutis were permanently removed from the rain forest,what would be the result?

Accepted Answer

A) swift extinction of harpy eagles 
B) eventual extinction of Brazil nut trees 
C) eventual extinction of orchid bees 
D) swift extinction of orchids 
E) swift extinction of sloths 
A) swift extinction of harpy eagles 
B) eventual extinction of Brazil nut trees 
C) eventual extinction of orchid bees 
D) swift extinction of orchids 
E) swift extinction of sloths

Question 12

On the Pacific island of Guam,large herbivorous bats called "flying foxes" commonly feed on cycad seeds,a potent source of neurotoxins.The flying foxes do not visit male cones.Consequently,what should be true?

Accepted Answer

A) The flying foxes are attracted to cycad fruit, and eat the enclosed seeds only by accident. 
B) Flying foxes are highly susceptible to the effects of the neurotoxins. 
C) The flying foxes assist the beetles as important pollinating agents of the cycads. 
D) Flying foxes can be dispersal agents of cycad seeds if the seeds sometimes get swallowed whole (in other words, without getting chewed). 
A) The flying foxes are attracted to cycad fruit, and eat the enclosed seeds only by accident. 
B) Flying foxes are highly susceptible to the effects of the neurotoxins. 
C) The flying foxes assist the beetles as important pollinating agents of the cycads. 
D) Flying foxes can be dispersal agents of cycad seeds if the seeds sometimes get swallowed whole (in other words, without getting chewed).

Question 13

Cutting down rain forests can lead to

Accepted Answer

A) decreased temperatures. 
B) decreased rainfall. 
C) decreased atmospheric carbon dioxide. 
D) increased biodiversity. 
E) more than one of these. 
A) decreased temperatures. 
B) decreased rainfall. 
C) decreased atmospheric carbon dioxide. 
D) increased biodiversity. 
E) more than one of these.

Question 14

Which of the following statements is true of the pine life cycle?

Accepted Answer

A) Fertilization produces a zygote and an endosperm. 
B) The pine tree is a gametophyte. 
C) Male and female gametophytes are in close proximity during gamete synthesis. 
D) Conifer pollen grains contain male gametophytes. 
E) Double fertilization is a relatively common phenomenon. 
A) Fertilization produces a zygote and an endosperm. 
B) The pine tree is a gametophyte. 
C) Male and female gametophytes are in close proximity during gamete synthesis. 
D) Conifer pollen grains contain male gametophytes. 
E) Double fertilization is a relatively common phenomenon.

Question 15

Which of the following sex and generation combinations most directly produces the integument of a pine seed?

Accepted Answer

A) male gametophyte 
B) female gametophyte 
C) male sporophyte 
D) female sporophyte 
A) male gametophyte 
B) female gametophyte 
C) male sporophyte 
D) female sporophyte

Question 16

The following questions refer to the description below.
Biologists are studying pollination of one species of alpine flower in the Canadian Rocky Mountains.In late spring and early summer,they find that the majority of flowers are deep red and deep pink.Toward the end of summer,the most common colours are white and very pale pink.
-What is the most likely explanation as to why the colours of the flowers from the same plants change from dark red to white as summer progresses?

Accepted Answer

A) The alpine flowering plant produces red pigment early in the season but, as the pigment amount decreases over time, the flowers produced are mostly white, 
B) Biologists suspect that a pollinator that prefers red flowers pollinates the flowers early in the season, while a second pollinator that prefers light-coloured and white flowers pollinates the flowers later in the season. 
C) The same pollinator is attracted to both colours equally. 
D) Herbivores trample the early flowers so only the pale pink and white flowers remain. 
E) The flowers are likely wind pollinated, so flower colour changes randomly. 
A) The alpine flowering plant produces red pigment early in the season but, as the pigment amount decreases over time, the flowers produced are mostly white, 
B) Biologists suspect that a pollinator that prefers red flowers pollinates the flowers early in the season, while a second pollinator that prefers light-coloured and white flowers pollinates the flowers later in the season. 
C) The same pollinator is attracted to both colours equally. 
D) Herbivores trample the early flowers so only the pale pink and white flowers remain. 
E) The flowers are likely wind pollinated, so flower colour changes randomly.

Question 17

Within a gymnosperm megasporangium,what is the correct sequence in which the following should appear during development,assuming that fertilization occurs?
1)sporophyte embryo
2)female gametophyte
3)egg cell
4)megaspore

Accepted Answer

A) 4 → 3 → 2 → 1 
B) 4 → 2 → 3 → 1 
C) 4 → 1 → 2 → 3 
D) 1 → 4 → 3 → 2 
E) 1 → 4 → 2 → 3 
A) 4 → 3 → 2 → 1 
B) 4 → 2 → 3 → 1 
C) 4 → 1 → 2 → 3 
D) 1 → 4 → 3 → 2 
E) 1 → 4 → 2 → 3

Question 18

What is true of stamens,sepals,petals,carpels,and pinecone scales?

Accepted Answer

A) They are female reproductive parts. 
B) None are capable of photosynthesis. 
C) They are modified leaves. 
D) They are found on flowers. 
E) They are found on angiosperms. 
A) They are female reproductive parts. 
B) None are capable of photosynthesis. 
C) They are modified leaves. 
D) They are found on flowers. 
E) They are found on angiosperms.

Question 19

Gymnosperms and angiosperms have the following in common except

Accepted Answer

A) seeds. 
B) pollen. 
C) vascular tissue. 
D) ovaries. 
E) ovules. 
A) seeds. 
B) pollen. 
C) vascular tissue. 
D) ovaries. 
E) ovules.

Question 20

Which trait(s)is (are)shared by many modern gymnosperms and angiosperms?
1)pollen transported by wind
2)lignified xylem
3)microscopic gametophytes
4)sterile sporophylls,modified to attract pollinators
5)endosperm

Accepted Answer

A) 1 only 
B) 1 and 3 
C) 1, 2, and 3 
D) 1, 3, and 5 
E) 2, 4, and 5 
A) 1 only 
B) 1 and 3 
C) 1, 2, and 3 
D) 1, 3, and 5 
E) 2, 4, and 5

Exam 30: Plant Diversity II: The Evolution of Seed Plants

All of the following cellular structures are functionally important in cells of the gametophytes of both angiosperms and gymnosperms except

How have fruits contributed to the success of angiosperms?

The agouti is most directly involved with the Brazil nut tree's dispersal of

Archaeopteris was heterosporous just like seed plants,but it reproduced via spores and not seeds.Transitional seedless species of vascular plants are referred to as

The generative cell of male angiosperm gametophytes is haploid.This cell divides to produce two haploid sperm cells.What type of cell division does the generative cell undergo to produce these sperm cells?

Which of the following statements correctly describes a portion of the pine life cycle?

Which of the following is most important in making the typical seed more resistant to adverse conditions than the typical spore?

In a typical angiosperm,what is the sequence of structures encountered by the tip of a growing pollen tube on its way to the egg? 1)micropyle 2)style 3)ovary 4)stigma

If a female orchid bee has just left a Brazil nut tree with nectar in her stomach,and if she visits only other flowers on the same tree,the result should be

If all agoutis were permanently removed from the rain forest,what would be the result?

On the Pacific island of Guam,large herbivorous bats called "flying foxes" commonly feed on cycad seeds,a potent source of neurotoxins.The flying foxes do not visit male cones.Consequently,what should be true?

Cutting down rain forests can lead to

Which of the following statements is true of the pine life cycle?

Which of the following sex and generation combinations most directly produces the integument of a pine seed?

Within a gymnosperm megasporangium,what is the correct sequence in which the following should appear during development,assuming that fertilization occurs? 1)sporophyte embryo 2)female gametophyte 3)egg cell 4)megaspore

What is true of stamens,sepals,petals,carpels,and pinecone scales?

Gymnosperms and angiosperms have the following in common except

Which trait(s)is (are)shared by many modern gymnosperms and angiosperms? 1)pollen transported by wind 2)lignified xylem 3)microscopic gametophytes 4)sterile sporophylls,modified to attract pollinators 5)endosperm

Introduction: Evolution and Themes of Biology

The Chemical Context of Life

Water and Life

Carbon and the Molecular Diversity of Life

The Structure and Function of Large Biological Molecules

A Tour of the Cell

Membrane Structure and Function

An Introduction to Metabolism

Cellular Respiration and Fermentation

Photosynthesis

Cell Communication

The Cell Cycle

Meiosis and Sexual Life Cycles

Mendel and the Gene Idea

The Chromosomal Basis of Inheritance

The Molecular Basis of Inheritance

From Gene to Protein

Regulation of Gene Expression

Viruses

DNA Tools and Biotechnology

Genomes and Their Evolution

Descent with Modification: A Darwinian View of Life

The Evolution of Populations

The Origin of Species

The History of Life on Earth

Phylogeny and the Tree of Life

Bacteria and Archaea

Protists

Plant Diversity I: How Plants Colonized Land

Fungi

An Overview of Animal Diversity

An Introduction to Invertebrates

The Origin and Evolution of Vertebrates

Plant Structure,Growth,and Development

Resource Acquisition and Transport in Vascular Plants

Soil and Plant Nutrition

Angiosperm Reproduction and Biotechnology

Plant Responses to Internal and External Signals

Basic Principles of Animal Form and Function

Animal Nutrition

Circulation and Gas Exchange

The Immune System

Osmoregulation and Excretion

Hormones and the Endocrine System

Animal Reproduction

Animal Development

Neurons,Synapses,and Signalling

Nervous Systems

Sensory and Motor Mechanisms

Animal Behaviour

An Introduction to Ecology and the Biosphere

Population Ecology

Community Ecology

Ecosystems and Restoration Ecology

Conservation Biology and Global Change

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