Question 1

Which structure is found in the stamen?

Accepted Answer

A)   Anther
B)   Corolla
C)   Stigma
D)   Sepal
E)   ReceptacleF) B) and E)
G) A) and D)

Question 2

How could you determine if an unknown plant stem has microphylls or small megaphylls?

Accepted Answer

A)   Examine the vascular system.If there is only one strand of vascular tissue,they are most likely microphylls.
B)   Measure the length of the leaflike structures.If they are a centimeter or less in length,they are microphylls.
C)   Examine the branching pattern.If it is dichotomous,they are most likely megaphylls.
D)   Look for sporangia.If they are present,the leaflike structures are most likely microphylls.
E)   Look for roots.If they are absent,the structures are most likely megaphylls.F) C) and D)
G) A) and C)

Question 3

Which group is characterized by fruits,flowers,endosperms,and highly reduced gametophytes?

Accepted Answer

A)   Cycads
B)   Angiosperms
C)   Conifers
D)   Gnetophytes
E)   GinkgosF) B) and C)
G) C) and D)

Question 4

Which evolutionary adaptation to land is not shared by all land plants?

Accepted Answer

A)   Waxy protective coverings
B)   Support against gravity
C)   A means of taking up water from the soil
D)   Protective structures for the new sporophyte
E)   Water transport by xylemF) C) and E)
G) A) and B)

Question 5

Bird-pollinated flowers

Accepted Answer

A)   are often red and odorless.
B)   have characteristic odors.
C)   have conspicuous markings that are evident only in the ultraviolet region of the spectrum.
D)   are always grouped in an inflorescence.
E)   always have long,narrow shapes.F) A) and B)
G) A) and E)

Question 6

A plant that produces seeds in fruits,endosperm in its seeds,and one cotyledon per seedling is most likely a member of the

Accepted Answer

A)   monocots.
B)   cycads.
C)   ginkgoes.
D)   conifers.
E)   dicots.F) A) and E)
G) None of the above

Question 7

Which group exhibits basal growth,are sometimes called the scouring rushes because of the silica deposits in their cell walls,and have simple leaves that form distinct whorls around the stem?

Accepted Answer

A)   Ginkgoes
B)   Horsetails
C)   Ferns
D)   Hornworts
E)   Club mossesF) A) and E)
G) A) and B)

Question 8

Throughout the evolution of the land plants,the sporophyte generation has become _______ and more independent of the gametophyte,and the gametophyte generation has become _______ and more dependent on the sporophyte.

Accepted Answer

A)   smaller;smaller
B)   larger;smaller
C)   smaller;larger
D)   larger;larger
E)   larger or smaller;largerF) None of the above
G) All of the above

Question 9

Which group of plants produces "wood" (extensively proliferated xylem) ?

Accepted Answer

A)   Plants that produce seeds
B)   Only plants that do not have pollen
C)   All plants that depend on water for fertilization
D)   Only plants that produce haploid spores
E)   All plants with vascular systemsF) B) and C)
G) A) and E)

Question 10

The green algae include which clade?

Accepted Answer

A)   Embryophytes
B)   Lycophytes
C)   Chlorophytes
D)   Glaucophytes
E)   EuphyllophytesF) A) and E)
G) A) and D)

Question 11

Seed plants are all

Accepted Answer

A)   heterosporous.
B)   dioecious.
C)   monoecious.
D)   eudicots.
E)   dependent on animals for fertilization.F) A) and B)
G) A) and C)

Question 12

Which of the following is a synapomorphy of stoneworts and land plants?

Accepted Answer

A)   Chloroplasts
B)   Chlorophyll b
C)   Multicellular sporophyte
D)   Retention of the egg in the parental organism
E)   Branched apical growthF) All of the above
G) C) and E)

Question 13

The nonvascular plant clades (including mosses) require water for fertilization during reproduction because

Accepted Answer

A)   they have no vascular system to transport water to the developing sporophyte.
B)   the eggs are fertilized by a flagellated sperm that swims to the egg.
C)   the neck of the archegonium has to degrade to allow the sperm to enter.
D)   their pollinators are aquatic.
E)   Both b and cF) A) and C)
G) C) and E)

Question 14

In which stage does genetic recombination not occur?

Accepted Answer

A)   Horsetail sporangia
B)   Moss sporophyte
C)   Fern sori
D)   Club moss strobili
E)   Moss gametophyteF) B) and E)
G) A) and E)

Question 15

Nonvascular land plants have never evolved to the size of vascular plants,most likely because they lack

Accepted Answer

A)   an efficient system for conducting water and minerals.
B)   an efficient mode of respiration.
C)   a photosynthetic mechanism.
D)   mechanisms for nutrient and water absorption.
E)   the ability to disperse offspring.F) A) and B)
G) B) and E)

Question 16

Stomata appear to have arisen first in the

Accepted Answer

A)   horsetails.
B)   mosses.
C)   liverworts.
D)   gymnosperms.
E)   angiosperms.F) B) and C)
G) A) and E)

Question 17

The most stable resting stage in the life cycle of the seedless vascular plants is the

Accepted Answer

A)   sporangium.
B)   spore.
C)   spore mother cell.
D)   sporophyte.
E)   gametophye.F) A) and D)
G) C) and E)

Question 18

The gymnosperms are considered to be

Accepted Answer

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

Question 19

One important consequence of the evolution of xylem was the development of a mechanism for

Accepted Answer

A)   sugar transport.
B)   sperm transport.
C)   preventing water evaporation.
D)   rigid structural support.
E)   flower development.F) A) and C)
G) D) and E)

Question 20

Which group consists of three very different genera that share some characteristics with the angiosperms,including double fertilization?

Accepted Answer

A)   Cycads
B)   Ginkgos
C)   Conifers
D)   Gnetophytes
E)   AngiospermsF) A) and E)
G) D) and E)

Exam 21: The Evolution of Plants

In which stage does genetic recombination not occur?

Correct AnswerverifiedShow Answer

Which of the following is a synapomorphy of stoneworts and land plants?

Correct AnswerverifiedShow Answer

Seed plants are all

Correct AnswerverifiedShow Answer

The green algae include which clade?

Correct AnswerverifiedShow Answer

One important consequence of the evolution of xylem was the development of a mechanism for

Correct AnswerverifiedShow Answer

Which group exhibits basal growth,are sometimes called the scouring rushes because of the silica deposits in their cell walls,and have simple leaves that form distinct whorls around the stem?

Correct AnswerverifiedShow Answer

Stomata appear to have arisen first in the

Correct AnswerverifiedShow Answer

Which group is characterized by fruits,flowers,endosperms,and highly reduced gametophytes?

Correct AnswerverifiedShow Answer

A plant that produces seeds in fruits,endosperm in its seeds,and one cotyledon per seedling is most likely a member of the

Correct AnswerverifiedShow Answer

Throughout the evolution of the land plants,the sporophyte generation has become _______ and more independent of the gametophyte,and the gametophyte generation has become _______ and more dependent on the sporophyte.

Correct AnswerverifiedShow Answer

Which group of plants produces "wood" (extensively proliferated xylem) ?

Correct AnswerverifiedShow Answer

The most stable resting stage in the life cycle of the seedless vascular plants is the

Correct AnswerverifiedShow Answer

Which structure is found in the stamen?

Correct AnswerverifiedShow Answer

Which evolutionary adaptation to land is not shared by all land plants?

Correct AnswerverifiedShow Answer

Nonvascular land plants have never evolved to the size of vascular plants,most likely because they lack

Correct AnswerverifiedShow Answer

Bird-pollinated flowers

Correct AnswerverifiedShow Answer

Which group consists of three very different genera that share some characteristics with the angiosperms,including double fertilization?

Correct AnswerverifiedShow Answer

How could you determine if an unknown plant stem has microphylls or small megaphylls?

Correct AnswerverifiedShow Answer

The gymnosperms are considered to be

Correct AnswerverifiedShow Answer

The nonvascular plant clades (including mosses) require water for fertilization during reproduction because

Correct AnswerverifiedShow Answer

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Throughout the evolution of the land plants,the sporophyte generation has become _ and more independent of the gametophyte,and the gametophyte generation has become _ and more dependent on the sporophyte.

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