Question 1

The following question refers to the generalized life cycle for plants shown in the figure. Each number within a circle or square represents a specific plant or plant part, and each number over an arrow represents meiosis, mitosis, or fertilization.  Which number represents a megaspore mother cell in the figure?

Accepted Answer

A)   1
B)   3
C)   5
D)   7E) A) and D)
F) None of the above B

Question 2

Which of the following claims about moss gametophytes is most consistent with the observation that they lack a cuticle and are 1-2 cells thick?

Accepted Answer

A)   They use stomata for gas exchange regulation.
B)   They can easily lose water to, and absorb water from, the atmosphere.
C)   Photosynthesis occurs throughout the entire gametophyte surface.
D)   They have branching veins in their leaves.E) A) and C)
F) A) and B)

Question 3

Which of these structures produce spores?

Accepted Answer

A)   sporophyte (capsule)  of a moss
B)   antheridium of a moss or fern
C)   archegonium of a moss or fern
D)   gametophyte of a mossE) A) and B)
F) A) and C)

Question 4

Use the following information to answer the question.
Big Bend National Park in Texas is mostly Chihuahuan desert, where rainfall averages about 25 centimeters per year. Yet, it is not uncommon when hiking in this extremely arid zone to encounter mosses and ferns. One such plant is called "flower of stone." It is not a flowering plant, nor does it produce seeds. Under arid conditions, its leaflike structures curl up. However, when it rains, it unfurls its leaves, which form a bright green rosette on the desert floor. Consequently, it is sometimes called the "resurrection plant." At first glance, it could be a fern, a true moss, or a spike moss.
Which of the following characteristics is (are)  possessed in common by true mosses, ferns, and spike mosses, and therefore becomes useless at helping to determine to which of these groups "flower of stone" belongs?

Accepted Answer

A)   alternation of generations
B)   a sporophyte generation that is dominant and alternation of generations
C)   flagellated sperm and true leaves and roots
D)   flagellated sperm and alternation of generationsE) A) and B)
F) A) and D)

Question 5

Two small, poorly drained lakes lie close to each other in a northern forest. The basins of both lakes are composed of the same geologic substratum. One lake is surrounded by a dense Sphagnum mat; the other is not. Compared to the pond with Sphagnum, the pond lacking the moss mat most likely has ________.

Accepted Answer

A)   a lower concentration of bacteria
B)   a higher diversity of organisms
C)   a lower oxygen content
D)   a higher pHE) B) and C)
F) None of the above D

Question 6

In which of the following structures of a plant are apical meristems found?

Accepted Answer

A)   only in shoots
B)   only in roots
C)   in both roots and shoots
D)   in pollenE) C) and D)
F) None of the above

Question 7

Use the following information to answer the question.
Big Bend National Park in Texas is mostly desert, where rainfall averages about 25 centimeters per year. Yet, it is not uncommon when hiking in this extremely arid zone to encounter mosses and ferns.
What feature of both true mosses and ferns makes it most surprising that they can survive for many generations in dry deserts?

Accepted Answer

A)   flagellated sperm
B)   lack of vascular tissues
C)   lack of true roots
D)   lack of cuticleE) A) and B)
F) None of the above

Question 8

Assuming that they all belong to the same plant, which of the following lists the structures from largest to smallest?

Accepted Answer

A)   gametes, gametophytes, antheridia
B)   gametes, antheridia, gametophytes
C)   gametophytes, gametes, antheridia
D)   gametophytes, antheridia, gametesE) None of the above
F) A) and D)

Question 9

A student encounters a pondweed that appears to be a charophyte. Which of the following features would best help the student determine whether the sample comes from a charophyte or from some other type of green alga?

Accepted Answer

A)   molecular structure of enzymes inside the chloroplasts
B)   molecular structure of cellulose
C)   structure of mitochondria
D)   structure of sperm cellsE) All of the above
F) B) and C)

Question 10

Which of the following statements is accurate with regard to the life cycle of mosses?

Accepted Answer

A)   The haploid generation grows on the sporophyte generation.
B)   Spores are primarily distributed by water currents.
C)   Antheridia and archegonia are produced by gametophytes.
D)   The sporophyte generation is dominant.E) A) and C)
F) A) and B)

Question 11

The following question refers to the generalized life cycle for plants shown in the figure. Each number within a circle or square represents a specific plant or plant part, and each number over an arrow represents meiosis, mitosis, or fertilization.  In the figure, which number represents an embryo?

Accepted Answer

A)   1
B)   3
C)   7
D)   11E) A) and B)
F) A) and C)

Question 12

Which of the following characteristics of plants is absent in their closest relatives, the charophyte algae?

Accepted Answer

A)   chlorophyll b
B)   cellulose in cell walls
C)   sexual reproduction
D)   alternation of multicellular generationsE) C) and D)
F) None of the above

Question 13

You are hiking in a forest and come upon a mysterious plant, which you determine is either a lycophyte sporophyte or a monilophyte sporophyte. Which of the following characteristics would be most helpful in determining the correct classification of the plant?

Accepted Answer

A)   whether or not it has true leaves
B)   whether it has microphylls or megaphylls
C)   whether or not it has seeds
D)   its heightE) B) and C)
F) A) and C)

Question 14

Which of the following describes a difference between the structures of spores and seeds?

Accepted Answer

A)   Spores have a protective outer covering while seeds do not.
B)   Spores have an embryo while seeds do not.
C)   Spores have stored nutrition while seeds do not.
D)   Spores are unicellular while seeds are not.E) B) and C)
F) A) and C)

Question 15

Use the following information to answer the question.
Big Bend National Park in Texas is mostly desert, where rainfall averages about 25 centimeters per year. Yet, it is not uncommon when hiking in this extremely arid zone to encounter mosses and ferns.
Which of the following features is most important for true mosses and ferns to reproduce in the desert?

Accepted Answer

A)   that the sporophytes occupy only permanently shady, north-facing habitats
B)   that the sporophytes are low to the ground, growing no taller than a couple of inches
C)   that their gametophytes grow closely together
D)   that the sporophytes have highly lignified vascular tissuesE) B) and C)
F) A) and D)

Question 16

What evidence do paleobotanists look for that indicates the movement of plants from water to land?

Accepted Answer

A)   waxy cuticle to decrease evaporation from leaves
B)   loss of structures that produce spores
C)   sporopollenin to inhibit evaporation from leaves
D)   remnants of chloroplasts from photosynthesizing cellsE) A) and C)
F) B) and C)

Question 17

In plants, which of the following is a benefit of retaining the zygote on the living gametophyte?

Accepted Answer

A)   it protects the zygote from herbivores
B)   It helps in dispersal of pollen
C)   it helps in dispersal of the zygote
D)   it allows it to be nourished by the parent plantE) B) and D)
F) All of the above

Question 18

Which of the following could occur after plants moved from the oceans to land?

Accepted Answer

A)   Animals could also move onto land because there were opportunities for new food sources.
B)   Animals could also move onto land because they had easier access to nitrogen.
C)   Cyanobacteria could also move onto land because their host plants occurred there.
D)   Plants in the oceans were able to evolve forms that lived in much deeper parts of the oceans.E) A) and B)
F) A) and C)

Question 19

Which of the following is an accurate statement about the genus Sphagnum?

Accepted Answer

A)   It is an economically important liverwort.
B)   It grows in extensive mats in grassland areas.
C)   It accumulates to form coal and is burned as a fuel.
D)   It represents a large repository of CO2 that is likely to be released with global warming.E) B) and D)
F) C) and D)

Question 20

The following question refers to the generalized life cycle for plants shown in the figure. Each number within a circle or square represents a specific plant or plant part, and each number over an arrow represents meiosis, mitosis, or fertilization.  In the figure, which number represents the mature gametophyte?

Accepted Answer

A)   1
B)   3
C)   7
D)   11E) A) and B)
F) None of the above C

Exam 29: Nonvascular and Seedless Vascular Plants

Correct Answer
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B

Which of the following claims about moss gametophytes is most consistent with the observation that they lack a cuticle and are 1-2 cells thick?

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Which of these structures produce spores?

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D

In which of the following structures of a plant are apical meristems found?

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Assuming that they all belong to the same plant, which of the following lists the structures from largest to smallest?

Correct Answer
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A student encounters a pondweed that appears to be a charophyte. Which of the following features would best help the student determine whether the sample comes from a charophyte or from some other type of green alga?

Correct Answer
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Which of the following statements is accurate with regard to the life cycle of mosses?

Correct Answer
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The following question refers to the generalized life cycle for plants shown in the figure. Each number within a circle or square represents a specific plant or plant part, and each number over an arrow represents meiosis, mitosis, or fertilization. In the figure, which number represents an embryo?

Correct Answer
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Which of the following characteristics of plants is absent in their closest relatives, the charophyte algae?

Correct Answer
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You are hiking in a forest and come upon a mysterious plant, which you determine is either a lycophyte sporophyte or a monilophyte sporophyte. Which of the following characteristics would be most helpful in determining the correct classification of the plant?

Correct Answer
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Which of the following describes a difference between the structures of spores and seeds?

Correct Answer
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Correct Answer
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What evidence do paleobotanists look for that indicates the movement of plants from water to land?

Correct Answer
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In plants, which of the following is a benefit of retaining the zygote on the living gametophyte?

Correct Answer
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Which of the following could occur after plants moved from the oceans to land?

Correct Answer
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Which of the following is an accurate statement about the genus Sphagnum?

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C

Exam 29: Nonvascular and Seedless Vascular Plants

Correct AnswerverifiedB

Which of the following claims about moss gametophytes is most consistent with the observation that they lack a cuticle and are 1-2 cells thick?

Correct AnswerverifiedShow Answer

Which of these structures produce spores?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Correct AnswerverifiedD

In which of the following structures of a plant are apical meristems found?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Assuming that they all belong to the same plant, which of the following lists the structures from largest to smallest?

Correct AnswerverifiedShow Answer

A student encounters a pondweed that appears to be a charophyte. Which of the following features would best help the student determine whether the sample comes from a charophyte or from some other type of green alga?

Correct AnswerverifiedShow Answer

Which of the following statements is accurate with regard to the life cycle of mosses?

Correct AnswerverifiedShow Answer

The following question refers to the generalized life cycle for plants shown in the figure. Each number within a circle or square represents a specific plant or plant part, and each number over an arrow represents meiosis, mitosis, or fertilization. In the figure, which number represents an embryo?

Correct AnswerverifiedShow Answer

Which of the following characteristics of plants is absent in their closest relatives, the charophyte algae?

Correct AnswerverifiedShow Answer

You are hiking in a forest and come upon a mysterious plant, which you determine is either a lycophyte sporophyte or a monilophyte sporophyte. Which of the following characteristics would be most helpful in determining the correct classification of the plant?

Correct AnswerverifiedShow Answer

Which of the following describes a difference between the structures of spores and seeds?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

What evidence do paleobotanists look for that indicates the movement of plants from water to land?

Correct AnswerverifiedShow Answer

In plants, which of the following is a benefit of retaining the zygote on the living gametophyte?

Correct AnswerverifiedShow Answer

Which of the following could occur after plants moved from the oceans to land?

Correct AnswerverifiedShow Answer

Which of the following is an accurate statement about the genus Sphagnum?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedC

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B

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D

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C