Question 1

_______ are water-absorbing filaments present on the lower surfaces of the simplest liverwort gametophytes.

Accepted Answer

The answer of _______ are water-absorbing filaments present on the...

Question 2

Refer to the figure.   Are the gametes in the diagram haploid or diploid?

Accepted Answer

The answer of Refer to the figure.   Are...

Question 3

A property shared by the sporophyte of mosses and ferns is

Accepted Answer

A)  a well-developed vascular system. 
B)  roots. 
C)  sporangia clustered in sori. 
D)  apical cell division. 
E)  true leaves. 
A)  a well-developed vascular system. 
B)  roots. 
C)  sporangia clustered in sori. 
D)  apical cell division. 
E)  true leaves.

Question 4

Discuss the challenges of terrestrial life that land plants have addressed in order to survive.

Accepted Answer

Terrestrial life poses problems of suppo

Question 5

Chlorophytes

Accepted Answer

A)  contain the pigment phycoerythrin. 
B)  make up the smallest clade of green algae. 
C)  are limited to fresh water. 
D)  are under 10 cm in size. 
E)  include both unicellular and multicellular forms. 
A)  contain the pigment phycoerythrin. 
B)  make up the smallest clade of green algae. 
C)  are limited to fresh water. 
D)  are under 10 cm in size. 
E)  include both unicellular and multicellular forms.

Question 6

A megasporangium has the same relationship to a megaspore as a microsporangium has to a

Accepted Answer

A)  microspore. 
B)  sperm. 
C)  microgametophyte. 
D)  spore. 
E)  microspore mother cell. 
A)  microspore. 
B)  sperm. 
C)  microgametophyte. 
D)  spore. 
E)  microspore mother cell.

Question 7

Explain why the largest mosses are less than a meter tall.

Accepted Answer

Mosses have very rudimentary water trans

Question 8

Which feature is universal in the life cycles of land plants?

Accepted Answer

A)  Morphologically identical gametophyte and sporophyte stages 
B)  Genetically identical gametophyte and sporophyte stages 
C)  Alteration of generations between haploid gametophytes and diploid sporophytes 
D)  Multicellular haploid and diploid gametes 
E)  A unicellular gametophyte generation 
A)  Morphologically identical gametophyte and sporophyte stages 
B)  Genetically identical gametophyte and sporophyte stages 
C)  Alteration of generations between haploid gametophytes and diploid sporophytes 
D)  Multicellular haploid and diploid gametes 
E)  A unicellular gametophyte generation

Question 9

Which synapomorphy of the plant clade is shared by coleochaetophytes (a group of green algae) and glaucophytes (the group most similar to the unicellular ancestor of Plantae)?

Accepted Answer

A)  Chlorophyll b 
B)  Chloroplasts 
C)  Multicellular sporophyte 
D)  Retention of the egg in the parental organism 
E)  Branched apical growth 
A)  Chlorophyll b 
B)  Chloroplasts 
C)  Multicellular sporophyte 
D)  Retention of the egg in the parental organism 
E)  Branched apical growth

Question 10

Which of the following is not a characteristic that is present in all groups of land plants?

Accepted Answer

A)  Development from embryos protected by tissues of the parent plant 
B)  Cuticle 
C)  Chloroplasts containing chlorophylls a and b 
D)  Starch as the storage carbohydrate 
E)  The accessory pigment phycoerythrin 
A)  Development from embryos protected by tissues of the parent plant 
B)  Cuticle 
C)  Chloroplasts containing chlorophylls a and b 
D)  Starch as the storage carbohydrate 
E)  The accessory pigment phycoerythrin

Question 11

Refer to the figure.   Which letter in the diagram indicates the process of meiosis?

Accepted Answer

The answer of Refer to the figure.   Which...

Question 12

Hydrocarbons play two roles in algae: an energy reserve and a way to increase bouancy.The latter is important because it maximizes exposure to _______, providing energy for the algae to fix CO2.

Accepted Answer

Question 13

Hornworts form the sister clade of the

Accepted Answer

A)  vascular plants. 
B)  mosses. 
C)  liverworts. 
D)  horsetails and ferns. 
E)  nonvascular plants. 
A)  vascular plants. 
B)  mosses. 
C)  liverworts. 
D)  horsetails and ferns. 
E)  nonvascular plants.

Question 14

Which set of clades correctly describes the tracheophytes?

Accepted Answer

A)  Lycopodiophyta, monilophyta, cycadophyta, ginkgophyta, gnetophyta, coniferophyta, and angiosperms 
B)  Hepatophyta, bryophyta, and anthocerophyta 
C)  Hepatophyta, bryophyta, anthocerophyta, lycopodiophyta, and monilophyta 
D)  Anthocerophyta, gymnosperms, and angiosperms 
E)  Cycadophyta, ginkgophyta, gnetophyta, coniferophyta, and angiosperms 
A)  Lycopodiophyta, monilophyta, cycadophyta, ginkgophyta, gnetophyta, coniferophyta, and angiosperms 
B)  Hepatophyta, bryophyta, and anthocerophyta 
C)  Hepatophyta, bryophyta, anthocerophyta, lycopodiophyta, and monilophyta 
D)  Anthocerophyta, gymnosperms, and angiosperms 
E)  Cycadophyta, ginkgophyta, gnetophyta, coniferophyta, and angiosperms

Question 15

How can nonvascular plants survive on land without true leaves, stems, and roots?

Accepted Answer

A)  They are small enough to allow minerals to diffuse throughout their bodies. 
B)  They live in dry habitats. 
C)  They have a thick cuticle to prevent water loss. 
D)  Their spores are dispersed by wind. 
E)  Their sporophytes are nutritionally independent and provide carbohydrates to the rest of the plant. 
A)  They are small enough to allow minerals to diffuse throughout their bodies. 
B)  They live in dry habitats. 
C)  They have a thick cuticle to prevent water loss. 
D)  Their spores are dispersed by wind. 
E)  Their sporophytes are nutritionally independent and provide carbohydrates to the rest of the plant.

Question 16

Morphological structures, both micro- and macroscopic, have been used as evidence to support the idea that land plants arose from a green algae clade.Of these structures, the one that contributed most to the success of plants on land was

Accepted Answer

A)  the cuticle. 
B)  plasmodesmata. 
C)  a multicellular sporophyte. 
D)  the presence of tracheids. 
E)  the use of flagellated sperm. 
A)  the cuticle. 
B)  plasmodesmata. 
C)  a multicellular sporophyte. 
D)  the presence of tracheids. 
E)  the use of flagellated sperm.

Question 17

The evolutionary importance of plant tissue composed of tracheids is that it provides

Accepted Answer

A)  a plant vascular system and structural support. 
B)  structural support and increased growth. 
C)  enhanced photosynthesis and anchoring. 
D)  enhanced photosynthesis and a plant vascular system. 
E)  enhanced water conservation and anchoring. 
A)  a plant vascular system and structural support. 
B)  structural support and increased growth. 
C)  enhanced photosynthesis and anchoring. 
D)  enhanced photosynthesis and a plant vascular system. 
E)  enhanced water conservation and anchoring.

Question 18

Haploid unicellular spores are produced in the sporangia via

Accepted Answer

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

Question 19

Hornworts (Anthocerophyta) may be distinguished from liverworts (Hepatophyta) and mosses (Bryophyta) by the fact that

Accepted Answer

A)  they are vascular plants. 
B)  they are heterosporous. 
C)  their cells contain a single chloroplast. 
D)  of these groups of plants, only hornworts have stomata. 
E)  the gametophyte of hornworts may be several centimeters tall. 
A)  they are vascular plants. 
B)  they are heterosporous. 
C)  their cells contain a single chloroplast. 
D)  of these groups of plants, only hornworts have stomata. 
E)  the gametophyte of hornworts may be several centimeters tall.

Question 20

Rhyniophytes were characterized by

Accepted Answer

A)  dichotomously branching aerial stems, extensive roots, vascular tissue, and sporangia. 
B)  aerial stems with sporangia, rhizomes, and dichotomously branching rhizoids. 
C)  horizontal rhizomes, rhizoids, dichotomously branching aerial stems, and sporangia. 
D)  aerial stems with vascular tissue, nonvascular rhizomes, and extensive roots. 
E)  dichotomously branching aerial stems, extensive roots, and sporangia. 
A)  dichotomously branching aerial stems, extensive roots, vascular tissue, and sporangia. 
B)  aerial stems with sporangia, rhizomes, and dichotomously branching rhizoids. 
C)  horizontal rhizomes, rhizoids, dichotomously branching aerial stems, and sporangia. 
D)  aerial stems with vascular tissue, nonvascular rhizomes, and extensive roots. 
E)  dichotomously branching aerial stems, extensive roots, and sporangia.

Exam 27: Plants Without Seeds: From Water to Land

_______ are water-absorbing filaments present on the lower surfaces of the simplest liverwort gametophytes.

Refer to the figure. Are the gametes in the diagram haploid or diploid?

A property shared by the sporophyte of mosses and ferns is

Discuss the challenges of terrestrial life that land plants have addressed in order to survive.

Chlorophytes

A megasporangium has the same relationship to a megaspore as a microsporangium has to a

Explain why the largest mosses are less than a meter tall.

Which feature is universal in the life cycles of land plants?

Which synapomorphy of the plant clade is shared by coleochaetophytes (a group of green algae) and glaucophytes (the group most similar to the unicellular ancestor of Plantae)?

Which of the following is not a characteristic that is present in all groups of land plants?

Refer to the figure. Which letter in the diagram indicates the process of meiosis?

Hydrocarbons play two roles in algae: an energy reserve and a way to increase bouancy.The latter is important because it maximizes exposure to _______, providing energy for the algae to fix CO2.

Hornworts form the sister clade of the

Which set of clades correctly describes the tracheophytes?

How can nonvascular plants survive on land without true leaves, stems, and roots?

Morphological structures, both micro- and macroscopic, have been used as evidence to support the idea that land plants arose from a green algae clade.Of these structures, the one that contributed most to the success of plants on land was

The evolutionary importance of plant tissue composed of tracheids is that it provides

Haploid unicellular spores are produced in the sporangia via

Hornworts (Anthocerophyta) may be distinguished from liverworts (Hepatophyta) and mosses (Bryophyta) by the fact that

Rhyniophytes were characterized by

Studying Life

Small Molecules and the Chemistry of Life

Proteins, Carbohydrates, and Lipids

Nucleic Acids and the Origin of Life

Cells: the Working Units of Life

Cell Membranes

Cell Communication and Multicellularity

Energy, Enzymes, and Metabolism

Pathways That Harvest Chemical Energy

Photosynthesis: Energy From Sunlight

The Cell Cycle and Cell Division

Inheritance, Genes, and Chromosomes

Dna and Its Role in Heredity

From Dna to Protein: Gene Expression

Gene Mutation and Molecular Medicine

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Genomes

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Speciation

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The Evolution of Seed Plants

The Evolution and Diversity of Fungi

Animal Origins and the Evolution of Body Plans

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Regulation of Plant Growth

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Plant Responses to Environmental Challenges

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The Mammalian Nervous System: Structure and Higher Functions

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Hydrocarbons play two roles in algae: an energy reserve and a way to increase bouancy.The latter is important because it maximizes exposure to _______, providing energy for the algae to fix CO₂.