Question 1

The colorless rootlike projections of mosses,liverworts,and hornworts,which anchor them to the substrate are called

Accepted Answer

A)  rhizoids.
B)  tap roots.
C)  fibrous roots.
D)  specialized roots.
E)  storage roots.F) C) and E)
G) C) and D)

Question 2

The gametophyte is green and nutritionally independent in

Accepted Answer

A)  mosses,liverworts,and ferns.
B)  angiosperms.
C)  gymnosperms.
D)  tracheophytes.
E)  seed plants.F) A) and C)
G) A) and B)

Question 3

Advances in molecular systematics show that whisk ferns and horsetails are the closest living relatives of

Accepted Answer

A)  mosses.
B)  club mosses.
C)  seed plants.
D)  gymnosperms.
E)  ferns.F) A) and D)
G) A) and C)

Question 4

Hornworts differ from mosses and liverworts in containing

Accepted Answer

A)  small leaves.
B)  sporophytes.
C)  photosynthetic sporophytes.
D)  gametophytes.
E)  spores.F) All of the above
G) B) and E)

Question 5

Tracheophyte plants are characterized by all of the following except

Accepted Answer

A)  specialized conducting systems.
B)  waxy cuticle.
C)  stomata.
D)  homospory or heterospory.
E)  seeds.F) A) and D)
G) B) and C)

Question 6

In which of these groups does it appear that the cuticle evolved?

Accepted Answer

A)  Streptophytes
B)  Bryophytes
C)  Algae
D)  Land plants
E)  PterophytesF) A) and B)
G) A) and C)

Question 7

The development of tracheids helped land plants to

Accepted Answer

A)  resist desiccation.
B)  protect the genome from UV exposure.
C)  grow to very large sizes.
D)  absorb H2O from stems and leaves.
E)  take in more CO2.F) A) and D)
G) A) and C) C

Question 8

Survival on land for organisms is difficult because of the problem of

Accepted Answer

A)  desiccation.
B)  pollination.
C)  syngamy.
D)  spore germination.
E)  coevolution.F) B) and D)
G) All of the above

Question 9

A waxy cuticle prevents desiccation.What is the cost of this adaptation?

Accepted Answer

A)  Lowered light absorption
B)  Reduced gas permeability
C)  Slower H2O transport
D)  Increased exposure to damaging UV radiation
E)  Increased susceptibility to pathogenic infectionF) A) and D)
G) B) and C)

Question 10

For which of the following organisms is the sporophyte stage the dominant stage in the life cycle?

Accepted Answer

A)  charophyte
B)  fern
C)  green alga Chlamydomonas
D)  moss
E)  liverwortF) B) and C)
G) A) and B)

Question 11

Why is a rhizoid not considered a true root?

Accepted Answer

A)  Rhizoids lack the capacity to anchor mosses into the substrate.
B)  Rhizoids are not capable of absorbing water.
C)  True roots have mycorrhizal fungi.
D)  Rhizoids lack xylem tissue.
E)  Only true roots are capable of nitrogen fixation.F) A) and E)
G) All of the above

Question 12

In plants,the sporophyte generation produces ________ as a result of meiosis.

Accepted Answer

The answer of In plants,the sporophyte generation produces ________ as...

Question 13

The most abundant group of seedless tracheophyte plants are the

Accepted Answer

A)  club mosses.
B)  horse tails.
C)  angiosperms.
D)  ferns.
E)  gymnosperms.F) A) and B)
G) A) and C)

Question 14

All of the following statements about ferns are correct except

Accepted Answer

A)  ferns flourish in many habitats,but the majority are located in the tropics.
B)  the sporophyte is a conspicuous generation.
C)  the gametophyte is a conspicuous generation.
D)  ferns have underground stems called rhizomes.
E)  sori are located on the back or ventral surface of fronds.F) A) and D)
G) C) and E)

Question 15

The dominant stage in the life cycle of tracheophyte plants is the

Accepted Answer

A)  epiphyte generation.
B)  sporophyte generation.
C)  spore generation.
D)  gametophyte generation.
E)  angiosperm generation.F) A) and C)
G) C) and D)

Question 16

Cooksonia is a genus of very early tracheophyte plants.Unlike modern tracheophytes they only grew to a few centimeters in height.What feature provides the best explanation for their diminutive size?

Accepted Answer

A)  They completely lacked vascular tissues.
B)  They did not have stomata.
C)  They consisted of only photosynthetic stems,not roots or leaves.
D)  Cooksonia species were not autotrophic.E) A) and D)
F) B) and C) C

Question 17

What is a 15 meter tall tree fern?

Accepted Answer

A)  a gametophyte
B)  haploid
C)  produced by meiosis
D)  a sporophyteE) B) and C)
F) A) and B)

Question 18

In all seed plants,male and female ________ develop within the parent sporophyte and are completely dependent on it for nutrition and water.

Accepted Answer

The answer of In all seed plants,male and female ________...

Question 19

Which one of the following statements about haplodiplontic life cycles is false?

Accepted Answer

A)  For each gene,cells of the gametophyte stage have a single allele.
B)  Spore mother cells produce haploid spores by meiosis.
C)  The gametophyte stage produces gametes by mitosis.
D)  The zygote is the only diploid cell in the sporophyte stage.
E)  Mitosis occurs in both sporophyte and gametophyte stages.F) C) and D)
G) B) and E)

Question 20

Hepaticophytes lack stomata and tracheids.What would provide evidence to justify their inclusion in the Bryophytes and not the Charophytes?

Accepted Answer

A)  Cellulose in their cell walls
B)  Genes for ABA signalling
C)  The use of chlorophyll
D)  A haplodiplontic lifecycleE) C) and D)
F) B) and C) B

Exam 29: Seedless Plants

The colorless rootlike projections of mosses,liverworts,and hornworts,which anchor them to the substrate are called

Correct AnswerverifiedShow Answer

The gametophyte is green and nutritionally independent in

Correct AnswerverifiedShow Answer

Advances in molecular systematics show that whisk ferns and horsetails are the closest living relatives of

Correct AnswerverifiedShow Answer

Hornworts differ from mosses and liverworts in containing

Correct AnswerverifiedShow Answer

Tracheophyte plants are characterized by all of the following except

Correct AnswerverifiedShow Answer

In which of these groups does it appear that the cuticle evolved?

Correct AnswerverifiedShow Answer

The development of tracheids helped land plants to

Correct AnswerverifiedC

Survival on land for organisms is difficult because of the problem of

Correct AnswerverifiedShow Answer

A waxy cuticle prevents desiccation.What is the cost of this adaptation?

Correct AnswerverifiedShow Answer

For which of the following organisms is the sporophyte stage the dominant stage in the life cycle?

Correct AnswerverifiedShow Answer

Why is a rhizoid not considered a true root?

Correct AnswerverifiedShow Answer

In plants,the sporophyte generation produces ________ as a result of meiosis.

Correct AnswerverifiedShow Answer

The most abundant group of seedless tracheophyte plants are the

Correct AnswerverifiedShow Answer

All of the following statements about ferns are correct except

Correct AnswerverifiedShow Answer

The dominant stage in the life cycle of tracheophyte plants is the

Correct AnswerverifiedShow Answer

Cooksonia is a genus of very early tracheophyte plants.Unlike modern tracheophytes they only grew to a few centimeters in height.What feature provides the best explanation for their diminutive size?

Correct AnswerverifiedC

What is a 15 meter tall tree fern?

Correct AnswerverifiedShow Answer

In all seed plants,male and female ________ develop within the parent sporophyte and are completely dependent on it for nutrition and water.

Correct AnswerverifiedShow Answer

Which one of the following statements about haplodiplontic life cycles is false?

Correct AnswerverifiedShow Answer

Hepaticophytes lack stomata and tracheids.What would provide evidence to justify their inclusion in the Bryophytes and not the Charophytes?

Correct AnswerverifiedB

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C

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C

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B