Question 1

Seedless vascular plants were the dominant plants on Earth until their dominance ended at the end of the Carboniferous period, about ____.

Accepted Answer

A)  1.5 billion years ago
B)  420 million years ago
C)  250 million years ago
D)  125 million years ago
E)  17 million years agoF) B) and D)
G) A) and E)

Question 2

The phylum ____ contains about 6,000 known living species of nonvascular plants, including the genus Marchantia , whose members can reproduce asexually using gemmae.

Accepted Answer

A)  Hepatophyta
B)  Monilophyta
C)  Bryophyta
D)  Lycophyta
E)  AnthocerophytaF) C) and E)
G) A) and D)

Question 3

Meristems, regions of unspecialized cells that give rise to new plant parts, exist in all extant plant groups.

Accepted Answer

A) True 
 B)False

Question 4

A pollen grain is best described as a ____.

Accepted Answer

A)  female spore
B)  female gametophyte
C)  male gametophyte
D)  male sporophyte
E)  female sporophyteF) A) and B)
G) C) and D)

Question 5

A moss spore develops into a young gametophyte called a(n) ____.

Accepted Answer

A)  gametangium
B)  antheridium
C)  protonema
D)  prothallus
E)  archegoniumF) B) and D)
G) B) and C)

Question 6

The ____ phylum of seedless vascular plants has about 1000 known living species, including those in the genera Lycopodium and Selaginella ; the gametophyte of some of these species cannot photosynthesize, and instead uses mycorrhizae to obtain nutrients.

Accepted Answer

A)  Hepatophyta ​
B)  Monilophyta
C)  Bryophyta
D)  Lycophyta
E)  AnthocerophytaF) C) and D)
G) A) and E)

Question 7

The sporophyte generation of plants begins after ____, when the resulting ____ grows into a multicellular, ____ organism.

Accepted Answer

A)  fertilization; zygote; haploid
B)  fertilization; zygote; diploid
C)  fertilization; gamete; haploid
D)  meiosis; gamete; haploid
E)  meiosis; gamete; diploidF) A) and B)
G) B) and E)

Question 8

Liverworts, hornworts, and mosses are ____.

Accepted Answer

A)  seedless vascular plants
B)  seed plants
C)  nonvascular plants
D)  charophytes
E)  gymnospermsF) B) and D)
G) B) and C)

Question 9

Which statement describes the fern life cycle?

Accepted Answer

A)  Gametophytes originate within, and are dependent upon, sporophytes
B)  Sporophytes originate within, and are dependent upon, gametophytes
C)  Both gametophytes and sporophytes are totally independent from each other and are equally dominant
D)  Gametophytes are free-living and photosynthetic, but are replaced by a dominant sporophyte generation
E)  Gametophytes are photosynthetic and partially independent from the sporophytesF) B) and C)
G) C) and D)

Question 10

Which statement best describes fertilization in the moss life cycle?

Accepted Answer

A)  Pollen is blown by the wind to a female cone, where it forms a pollen tube that grows toward where the egg will form.
B)  Flagellated sperm swim in a film of water on the surface of the plant to reach an egg.
C)  Flagellated sperm are blown by the wind to a location near an egg, and then swim through plant fluids to reach the egg.
D)  Flagellated sperm swim through plant fluids to reach an egg.
E)  Flagellated sperm attach to the moist skin of certain animals and are transferred to the surface of the plant to reach an egg.F) C) and E)
G) A) and B)

Question 11

In liverworts, the gametophyte generation is a flat, branching, ribbonlike plate of tissue closely pressed against damp soil called a ____.

Accepted Answer

A)  rhizoid
B)  gemmae
C)  antheridium
D)  archegonium
E)  thallusF) A) and B)
G) A) and C)

Question 12

Bryophytes are clearly adapted to live in fresh water.

Accepted Answer

A) True 
 B)False

Question 13

Coal was formed primarily from buried remains of non-vascular plants.

Accepted Answer

A) True 
 B)False

Question 14

In vascular plants, the ____ generation is larger, more complex, and longer lived than the ____ generation.

Accepted Answer

A)  haploid gametophyte; haploid sporophyte
B)  haploid gametophyte; diploid sporophyte
C)  diploid sporophyte; diploid gametophyte
D)  diploid sporophyte; haploid gametophyte
E)  haploid sporophyte; haploid gametophyteF) A) and B)
G) B) and C)

Question 15

Which mechanism is the least likely explanation for high chromosome numbers in ferns?

Accepted Answer

A)  dysploidy
B)  polyploidy
C)  increased independent assortment
D)  increased recombination rates
E)  homosporyF) B) and E)
G) A) and B)

Question 16

Fossils of Cooksonia , which date to approximately ____ years ago, represent the oldest known fossils of vascular plants.

Accepted Answer

A)  1.5 billion ​
B)  425 million
C)  250 million
D)  125 million
E)  17 millionF) A) and B)
G) None of the above

Question 17

Match between columns
                        Premises: multicellular gametophyte

Accepted Answer

The Answer of  A and  E and  is...

Question 18

Bryophytes have ____.

Accepted Answer

A)  true leaves
B)  two spore types
C)  true roots
D)  true stems
E)  one spore typeF) A) and D)
G) B) and E)

Question 19

Which statement best explains why modern seedless vascular plants are confined largely to wet or humid environments?

Accepted Answer

A)  They require external water for reproduction.
B)  They do not have true roots.
C)  They lack stomata.
D)  They have a dominant sporophyte generation.
E)  They do not have flowers or fruits.F) A) and C)
G) All of the above

Question 20

The filamentous growths of moss gametophytes that produce numerous leafy shoots from buds are called ____.

Accepted Answer

A)  rhizoids
B)  thalli
C)  sporophytes
D)  zygotes
E)  protonemaF) B) and E)
G) D) and E)

Exam 28: Seedless Plants

Liverworts, hornworts, and mosses are ____.

Correct Answer
verified

Seedless vascular plants were the dominant plants on Earth until their dominance ended at the end of the Carboniferous period, about ____.

Correct Answer
verified

Bryophytes are clearly adapted to live in fresh water.

Correct Answer
verified

The filamentous growths of moss gametophytes that produce numerous leafy shoots from buds are called ____.

Correct Answer
verified

Coal was formed primarily from buried remains of non-vascular plants.

Correct Answer
verified

Answer the questions using the accompanying figure. Examine the overview of alternation of generations in plants. Match each letter with the part of the plant life cycle it represents. Figure 28.1

In vascular plants, the generation is larger, more complex, and longer lived than the generation.

Correct Answer
verified

Which mechanism is the least likely explanation for high chromosome numbers in ferns?

Correct Answer
verified

A moss spore develops into a young gametophyte called a(n) ____.

Correct Answer
verified

Bryophytes have ____.

Correct Answer
verified

Meristems, regions of unspecialized cells that give rise to new plant parts, exist in all extant plant groups.

Correct Answer
verified

Which statement best explains why modern seedless vascular plants are confined largely to wet or humid environments?

Correct Answer
verified

Fossils of Cooksonia , which date to approximately ____ years ago, represent the oldest known fossils of vascular plants.

Correct Answer
verified

A pollen grain is best described as a ____.

Correct Answer
verified

The ____ phylum of seedless vascular plants has about 1000 known living species, including those in the genera Lycopodium and Selaginella ; the gametophyte of some of these species cannot photosynthesize, and instead uses mycorrhizae to obtain nutrients.

Correct Answer
verified

The phylum ____ contains about 6,000 known living species of nonvascular plants, including the genus Marchantia , whose members can reproduce asexually using gemmae.

Correct Answer
verified

Which statement best describes fertilization in the moss life cycle?

Correct Answer
verified

The sporophyte generation of plants begins after , when the resulting grows into a multicellular, organism.

Correct Answer
verified

In liverworts, the gametophyte generation is a flat, branching, ribbonlike plate of tissue closely pressed against damp soil called a ____.

Correct Answer
verified

Which statement describes the fern life cycle?

Correct Answer
verified

Exam 28: Seedless Plants

Liverworts, hornworts, and mosses are ____.

Correct AnswerverifiedShow Answer

Seedless vascular plants were the dominant plants on Earth until their dominance ended at the end of the Carboniferous period, about ____.

Correct AnswerverifiedShow Answer

Bryophytes are clearly adapted to live in fresh water.

Correct AnswerverifiedShow Answer

The filamentous growths of moss gametophytes that produce numerous leafy shoots from buds are called ____.

Correct AnswerverifiedShow Answer

Coal was formed primarily from buried remains of non-vascular plants.

Correct AnswerverifiedShow Answer

Answer the questions using the accompanying figure. Examine the overview of alternation of generations in plants. Match each letter with the part of the plant life cycle it represents. Figure 28.1

In vascular plants, the ____ generation is larger, more complex, and longer lived than the ____ generation.

Correct AnswerverifiedShow Answer

Which mechanism is the least likely explanation for high chromosome numbers in ferns?

Correct AnswerverifiedShow Answer

A moss spore develops into a young gametophyte called a(n) ____.

Correct AnswerverifiedShow Answer

Bryophytes have ____.

Correct AnswerverifiedShow Answer

Meristems, regions of unspecialized cells that give rise to new plant parts, exist in all extant plant groups.

Correct AnswerverifiedShow Answer

Which statement best explains why modern seedless vascular plants are confined largely to wet or humid environments?

Correct AnswerverifiedShow Answer

Fossils of Cooksonia , which date to approximately ____ years ago, represent the oldest known fossils of vascular plants.

Correct AnswerverifiedShow Answer

A pollen grain is best described as a ____.

Correct AnswerverifiedShow Answer

The ____ phylum of seedless vascular plants has about 1000 known living species, including those in the genera Lycopodium and Selaginella ; the gametophyte of some of these species cannot photosynthesize, and instead uses mycorrhizae to obtain nutrients.

Correct AnswerverifiedShow Answer

The phylum ____ contains about 6,000 known living species of nonvascular plants, including the genus Marchantia , whose members can reproduce asexually using gemmae.

Correct AnswerverifiedShow Answer

Which statement best describes fertilization in the moss life cycle?

Correct AnswerverifiedShow Answer

The sporophyte generation of plants begins after ____, when the resulting ____ grows into a multicellular, ____ organism.

Correct AnswerverifiedShow Answer

In liverworts, the gametophyte generation is a flat, branching, ribbonlike plate of tissue closely pressed against damp soil called a ____.

Correct AnswerverifiedShow Answer

Which statement describes the fern life cycle?

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
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Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

In vascular plants, the generation is larger, more complex, and longer lived than the generation.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
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Correct Answer
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Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

The sporophyte generation of plants begins after , when the resulting grows into a multicellular, organism.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified