Question 1

What is the advantage of producing a seed over a spore?

Accepted Answer

A)  Seeds are diploid, and can grow directly into a sporophyte
B)  Seeds are haploid, and can grow directly into a sporophyte
C)  Seeds are diploid, and can grow directly into a gametophyte
D)  Seeds are haploid, and can grow directly into a gametophyteE) None of the above
F) A) and D)

Question 2

figure 18.18 
-In suggesting alternative hypotheses to explain figure 18.18,your lab partner states that perhaps mosses didn't evolve until recently,which is why they increase after herbs and shrubs.Which of the following would be the best response to your lab partner?

Accepted Answer

A)  Mosses were actually the first land plants to appear
B)  Mosses are better adapted to dry climates
C)  All land plants appeared at roughly the same time
D)  If you look carefully at the graph, there were a few mosses present 300,000 years ago, so they probably arose then
E)  Mammoths probably ate the mosses, so they did not appear until after the mammoths went extinctF) B) and D)
G) A) and E)

Question 3

figure 18.18 
-Of the three plants measured in figure 18.18,which requires water to allow sperm to swim to the egg?

Accepted Answer

A)  Herbs (grasses) 
B)  Mosses
C)  ShrubsD) All of the above
E) B) and C)

Question 4

Grasses being replaced with shrubs over time is an example of which of the following?

Accepted Answer

A)  Commensalism
B)  Parasitism
C)  Directional selection
D)  Evolution
E)  SuccessionF) B) and E)
G) A) and B)

Question 5

The two classes that make up the angiosperms are:

Accepted Answer

A)  Mosses and club mosses
B)  Ginkgos and cycads
C)  Monocotyledons and dicotyledons
D)  Horsetails and ferns
E)  Conifers and gnetophytesF) A) and E)
G) C) and D) C

Question 6

The part of the plant that absorbs water and nutrients is the:

Accepted Answer

A)  Stomata
B)  Root
C)  Xylem
D)  Phloem
E)  CuticleF) A) and E)
G) B) and D)

Question 7

The longest wavelength of visible sunlight is:

Accepted Answer

A)  Blue
B)  Violet
C)  Red
D)  YellowE) B) and C)
F) B) and D) C

Question 8

In bryophytes the sporophyte is conspicuous or dominant.

Accepted Answer

A) True 
 B)False

Question 9

Some evidence that algae are the closest relative to plants is that they both:

Accepted Answer

A)  Have chloroplasts
B)  Contain chlorophyll a
C)  Have cellulose rich cell walls
D)  Use starch as a nutrient reserve
E)  All are correctF) A) and B)
G) C) and D)

Question 10

Most plants appear green because:

Accepted Answer

A)  Chlorophyll is a pigment that reflects green wavelengths of light
B)  Carotenoids are pigments that reflect green wavelengths of light
C)  Carotenoids are pigments that absorb green wavelengths of light
D)  Chlorophyll is a pigment that absorbs green wavelengths of lightE) A) and B)
F) A) and C)

Question 11

Arabidopsis thaliana is a small angiosperm related to mustard.It is commonly used in plant research experiments.In one such experiment,an antifreeze protein from a species of bacteria was inserted into the genome of Arabidopsis thaliana,and the plants exposed to freezing temperatures.Plants without the antifreeze protein had 90% mortality,while those with the antifreeze protein only had 20% mortality.Arabidopsis thaliana is not a crop plant,why would scientists perform this experiment in this plant?

Accepted Answer

A)  Because crop plants are not killed by freezing
B)  Because scientists hope to establish it as a crop plant
C)  Because they cannot grow any other plants in the lab
D)  Because other plants cannot express bacterial genes
E)  Because it is an easy to grow model organismF) C) and E)
G) A) and E)

Question 12

Conifers produce:

Accepted Answer

A)  Both seeds and pollen in cones
B)  Only seeds in cones
C)  Only pollen in cones
D)  Only flowers
E)  Pollen in flowers and seeds in conesF) None of the above
G) D) and E)

Question 13

What was the advantage of looking for DNA samples in permafrost?

Accepted Answer

A)  Most plants and animals evolved in Siberia
B)  It is easier to take solid core samples
C)  The enzymes that make DNA are still active in the cells
D)  The freezing temperatures preserves the DNA
E)  Areas with permafrost are older than other parts of the world, allowing scientists to collect samples back 1.5 to 2 million yearsF) B) and E)
G) A) and D)

Question 14

Plants and algae most recently shared a common ancestor 480 million years ago,and plants colonized land shortly after that.Light,water,minerals,and dissolved gases surround the whole body of a submerged green alga,and the buoyancy of water provides physical support.What adaptation did plants have to make in taking up gasses without drying out when they moved to dry land?

Accepted Answer

A)  Production of pollen
B)  Development of stomata
C)  Development of vascular tissue
D)  Production of a cuticle
E)  Production of ligninF) B) and E)
G) A) and B)

Question 15

Why did the authors choose to look specifically for vertebrate mitochondrial genes in their core samples?

Accepted Answer

A)  Because only vertebrates eat plants
B)  Because plants also have mitochondria
C)  Because animal cells do not have chloroplasts
D)  Because animal cells do not have a nucleus
E)  Because animals would have been present in Beringia before plantsF) A) and E)
G) A) and D)

Question 16

Flowers:

Accepted Answer

A)  Are structures of plants that are only ornamental and have no reproductive value in plants
B)  Produce both pollen and egg cells
C)  Produce pollen only
D)  Produce egg cells only
E)  Are produced by both gymnosperms and angiospermsF) D) and E)
G) None of the above

Question 17

Fossil evidence places the origin of angiosperms in the early Cretaceous period,at least 130 million years ago.By 100 million years ago,all of today's major lineages of angiosperms were in place.Angiosperms make up 95% of all modern plant species.Which of the following may help explain the rapid success of angiosperms?

Accepted Answer

A)  Use of the wind to disperse pollen and seeds
B)  Flowers and fruits help protect and disperse both pollen and seeds
C)  Use of the wind to disperse spores
D)  Use of water to disperse pollen and seeds
E)  Animals eating the plants helped to disperse both pollen and seedsF) A) and B)
G) All of the above

Question 18

In angiosperms,pollen must go through mitosis to produce gametes.Therefore pollen is which of the following?

Accepted Answer

A)  A sporophyte
B)  A spore
C)  A seed
D)  Sperm
E)  A gametophyteF) A) and B)
G) B) and D)

Question 19

Arabidopsis thaliana is a small angiosperm related to mustard.It is commonly used in plant research experiments.In one such experiment,an antifreeze protein from a species of bacteria was inserted into the genome of Arabidopsis thaliana,and the plants exposed to freezing temperatures.Plants without the antifreeze protein had 90% mortality,while those with the antifreeze protein only had 20% mortality.What was the dependent variable in this experiment?

Accepted Answer

A)  The percent of the plants surviving
B)  The temperature
C)  The presence or absence of the antifreeze proteins
D)  Arabidopsis thaliana
E)  The bacteriaF) A) and C)
G) B) and E)

Question 20

The part of the plant that transports sugars produced by photosynthesis to the non-green parts of the plant is the:

Accepted Answer

A)  Stomata
B)  Root
C)  Phloem
D)  Xylem
E)  CuticleF) C) and D)
G) A) and B) C

Exam 18: Plants

What is the advantage of producing a seed over a spore?

Correct Answer
verified

figure 18.18 -In suggesting alternative hypotheses to explain figure 18.18,your lab partner states that perhaps mosses didn't evolve until recently,which is why they increase after herbs and shrubs.Which of the following would be the best response to your lab partner?

Correct Answer
verified

figure 18.18 -Of the three plants measured in figure 18.18,which requires water to allow sperm to swim to the egg?

Correct Answer
verified

Grasses being replaced with shrubs over time is an example of which of the following?

Correct Answer
verified

The two classes that make up the angiosperms are:

Correct Answer
verified
C

The part of the plant that absorbs water and nutrients is the:

Correct Answer
verified

The longest wavelength of visible sunlight is:

Correct Answer
verified
C

In bryophytes the sporophyte is conspicuous or dominant.

Correct Answer
verified

Some evidence that algae are the closest relative to plants is that they both:

Correct Answer
verified

Most plants appear green because:

Correct Answer
verified

Correct Answer
verified

Conifers produce:

Correct Answer
verified

What was the advantage of looking for DNA samples in permafrost?

Correct Answer
verified

Correct Answer
verified

Why did the authors choose to look specifically for vertebrate mitochondrial genes in their core samples?

Correct Answer
verified

Flowers:

Correct Answer
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Correct Answer
verified

In angiosperms,pollen must go through mitosis to produce gametes.Therefore pollen is which of the following?

Correct Answer
verified

Correct Answer
verified

The part of the plant that transports sugars produced by photosynthesis to the non-green parts of the plant is the:

Correct Answer
verified
C

Exam 18: Plants

What is the advantage of producing a seed over a spore?

Correct AnswerverifiedShow Answer

figure 18.18 -In suggesting alternative hypotheses to explain figure 18.18,your lab partner states that perhaps mosses didn't evolve until recently,which is why they increase after herbs and shrubs.Which of the following would be the best response to your lab partner?

Correct AnswerverifiedShow Answer

figure 18.18 -Of the three plants measured in figure 18.18,which requires water to allow sperm to swim to the egg?

Correct AnswerverifiedShow Answer

Grasses being replaced with shrubs over time is an example of which of the following?

Correct AnswerverifiedShow Answer

The two classes that make up the angiosperms are:

Correct AnswerverifiedC

The part of the plant that absorbs water and nutrients is the:

Correct AnswerverifiedShow Answer

The longest wavelength of visible sunlight is:

Correct AnswerverifiedC

In bryophytes the sporophyte is conspicuous or dominant.

Correct AnswerverifiedShow Answer

Some evidence that algae are the closest relative to plants is that they both:

Correct AnswerverifiedShow Answer

Most plants appear green because:

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Conifers produce:

Correct AnswerverifiedShow Answer

What was the advantage of looking for DNA samples in permafrost?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Why did the authors choose to look specifically for vertebrate mitochondrial genes in their core samples?

Correct AnswerverifiedShow Answer

Flowers:

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

In angiosperms,pollen must go through mitosis to produce gametes.Therefore pollen is which of the following?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

The part of the plant that transports sugars produced by photosynthesis to the non-green parts of the plant is the:

Correct AnswerverifiedC

Correct Answer
verified

Correct Answer
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Correct Answer
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Correct Answer
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C

Correct Answer
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Correct Answer
verified
C

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Correct Answer
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Correct Answer
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C