BIOLOGY 102 EXAM 3 QUESTIONS
AND ANSWERS ALL CORRECT
Which of these facts provides the best support for the hypothesis that plants evolved
from green algae?
Plants and green algae are photosynthetic.
Plants and green algae have chloroplasts.
The chloroplasts of plants and green algae all have both chlorophyll a and b. - Answer-
The chloroplasts of plants and green algae all have both chlorophyll a and b.
Select the correct statement about plant life cycles.
Meiosis in plant life cycles is a sexual process, producing gametes.
Over evolutionary time, the sporophyte has replaced the gametophyte in plant life
cycles.
At some point in the life cycle of all plants, the sporophyte is dependent on its
gametophyte parent. - Answer- At some point in the life cycle of all plants, the
sporophyte is dependent on its gametophyte parent.
Select the correct statement contrasting gametophytes and sporophytes.
Sporophytes are vascular, whereas gametophytes are nonvascular.
Sporophytes are larger than gametophytes.
Sporophytes are diploid, whereas gametophytes are haploid. - Answer- Sporophytes
are diploid, whereas gametophytes are haploid
What is the process by which a trait present in an ancestral organism is modified by
natural selection over time in descendants of that ancestor?
analogy
homology
convergent evolution
descent with modification - Answer- decent with modification
In plants, the ________ produces haploid gametes (eggs and sperm) by mitosis,
whereas the ________ produces haploid spores by meiosis.
zygote; embryo
embryo; zygote
,gametophyte; sporophyte
sporophyte; gametophyte - Answer- gametophyte; sporophyte
When you look at a pine or maple tree, the plant you see is a _____. See Concept 30.1
(Page 635)
View Available Hint(s)
diploid gametophyte
triploid endosperm
haploid sporophyte
diploid sporophyte
haploid gametophyte - Answer- diploid sporophyte
The adaptation that made possible the colonization of dry land environments by seed
plants is most likely the result of the evolution of _____. See Concept 30.1 (Page 636)
View Available Hint(s)
ovules
pollen
cones
heterospory
sporophylls - Answer- pollen
Which of the following is a major trend in land plant evolution?
the trend toward smaller size
the trend toward a sporophyte-dominated life cycle
the trend toward a gametophyte-dominated life cycle
the trend toward larger gametophytes - Answer- the trend toward a sporophyte-
dominated life cycle
In addition to seeds, which of the following characteristics is unique to the seed-
producing plants?
pollen
sporopollenin
lignin present in cell walls
megaphylls - Answer- pollen
In seed plants, which of the following is part of a pollen grain and has a function most
like that of the seed coat?
stigma
sporangium
sporophyll
sporopollenin - Answer- sporopollenin
,In terms of alternation of generations, the internal parts of the pollen grains of seed-
producing plants are most similar to a _____.
moss sporophyte
fern gametophyte bearing only antheridia
fern sporophyte
moss gametophyte bearing both male and female gametangia - Answer- fern
gametophyte bearing only antheridia
The advantages of seeds, compared to spores, include ________.
providing nutrition for animals
containing a nutrient store for a developing sporophyte
using wind as a dispersal agent
relying on animals for pollination - Answer- containing a nutrient store for a developing
sporophyte
Which of the following sex and generation combinations directly produces the pollen
tube of angiosperms?
female gametophyte
male sporophyte
female sporophyte
male gametophyte - Answer- male gametophyte
One day, you go outside and see that the cars on the street are covered in a yellow
"dust." Which of the following statements can be correctly applied to this "dust"?
The dust is the seed production of pines and is so abundant because the seeds are tiny
and take very little energy to produce.
The dust is the spore production of ferns and is so abundant because the spores are
wind-dispersed.
The dust is the seed production of ferns and is so abundant because the seeds are tiny
and take very little energy to produce.
The dust is pine pollen and is so abundant because the pines are wind-pollinated. -
Answer- The dust is pine pollen and is so abundant because the pines are wind-
pollinated
Ovules are found within structure _____.
A
B
C
D
E - Answer- b
, Which of these is unique to flowering plants?
double fertilization
haploid gametophytes
an embryo surrounded by nutritive tissue
a dominant sporophyte generation
pollen production - Answer- double fertilization
The male gametophytes of flowering plants are also referred to as _____.
pollen grains
endosperm
embryo sacs
male sporophytes
megaspores - Answer- pollen grains
In flowering plants the integuments of the ovule develop into a(n) _____.
seed coat
cotyledon
fruit
sporophyte
endosperm - Answer- seed coat
A carpel is composed of _____.
stigma, style, and ovary
ovule, megasporocyte, and anther
petal, sepal, and stamen
ovary, ovule, and anther
zygote, anther, and endosperm - Answer- stigma, style, and ovary
A stamen consists of _____.
stigma and filament
anther and filament
stigma and anther
ovary and sepal
stigma and style - Answer- anther and filament
In angiosperms, pollination is the transfer of pollen grain to the _____ of a flower on the
same plant or another plant of the same species.
stigma
ovary
anther
AND ANSWERS ALL CORRECT
Which of these facts provides the best support for the hypothesis that plants evolved
from green algae?
Plants and green algae are photosynthetic.
Plants and green algae have chloroplasts.
The chloroplasts of plants and green algae all have both chlorophyll a and b. - Answer-
The chloroplasts of plants and green algae all have both chlorophyll a and b.
Select the correct statement about plant life cycles.
Meiosis in plant life cycles is a sexual process, producing gametes.
Over evolutionary time, the sporophyte has replaced the gametophyte in plant life
cycles.
At some point in the life cycle of all plants, the sporophyte is dependent on its
gametophyte parent. - Answer- At some point in the life cycle of all plants, the
sporophyte is dependent on its gametophyte parent.
Select the correct statement contrasting gametophytes and sporophytes.
Sporophytes are vascular, whereas gametophytes are nonvascular.
Sporophytes are larger than gametophytes.
Sporophytes are diploid, whereas gametophytes are haploid. - Answer- Sporophytes
are diploid, whereas gametophytes are haploid
What is the process by which a trait present in an ancestral organism is modified by
natural selection over time in descendants of that ancestor?
analogy
homology
convergent evolution
descent with modification - Answer- decent with modification
In plants, the ________ produces haploid gametes (eggs and sperm) by mitosis,
whereas the ________ produces haploid spores by meiosis.
zygote; embryo
embryo; zygote
,gametophyte; sporophyte
sporophyte; gametophyte - Answer- gametophyte; sporophyte
When you look at a pine or maple tree, the plant you see is a _____. See Concept 30.1
(Page 635)
View Available Hint(s)
diploid gametophyte
triploid endosperm
haploid sporophyte
diploid sporophyte
haploid gametophyte - Answer- diploid sporophyte
The adaptation that made possible the colonization of dry land environments by seed
plants is most likely the result of the evolution of _____. See Concept 30.1 (Page 636)
View Available Hint(s)
ovules
pollen
cones
heterospory
sporophylls - Answer- pollen
Which of the following is a major trend in land plant evolution?
the trend toward smaller size
the trend toward a sporophyte-dominated life cycle
the trend toward a gametophyte-dominated life cycle
the trend toward larger gametophytes - Answer- the trend toward a sporophyte-
dominated life cycle
In addition to seeds, which of the following characteristics is unique to the seed-
producing plants?
pollen
sporopollenin
lignin present in cell walls
megaphylls - Answer- pollen
In seed plants, which of the following is part of a pollen grain and has a function most
like that of the seed coat?
stigma
sporangium
sporophyll
sporopollenin - Answer- sporopollenin
,In terms of alternation of generations, the internal parts of the pollen grains of seed-
producing plants are most similar to a _____.
moss sporophyte
fern gametophyte bearing only antheridia
fern sporophyte
moss gametophyte bearing both male and female gametangia - Answer- fern
gametophyte bearing only antheridia
The advantages of seeds, compared to spores, include ________.
providing nutrition for animals
containing a nutrient store for a developing sporophyte
using wind as a dispersal agent
relying on animals for pollination - Answer- containing a nutrient store for a developing
sporophyte
Which of the following sex and generation combinations directly produces the pollen
tube of angiosperms?
female gametophyte
male sporophyte
female sporophyte
male gametophyte - Answer- male gametophyte
One day, you go outside and see that the cars on the street are covered in a yellow
"dust." Which of the following statements can be correctly applied to this "dust"?
The dust is the seed production of pines and is so abundant because the seeds are tiny
and take very little energy to produce.
The dust is the spore production of ferns and is so abundant because the spores are
wind-dispersed.
The dust is the seed production of ferns and is so abundant because the seeds are tiny
and take very little energy to produce.
The dust is pine pollen and is so abundant because the pines are wind-pollinated. -
Answer- The dust is pine pollen and is so abundant because the pines are wind-
pollinated
Ovules are found within structure _____.
A
B
C
D
E - Answer- b
, Which of these is unique to flowering plants?
double fertilization
haploid gametophytes
an embryo surrounded by nutritive tissue
a dominant sporophyte generation
pollen production - Answer- double fertilization
The male gametophytes of flowering plants are also referred to as _____.
pollen grains
endosperm
embryo sacs
male sporophytes
megaspores - Answer- pollen grains
In flowering plants the integuments of the ovule develop into a(n) _____.
seed coat
cotyledon
fruit
sporophyte
endosperm - Answer- seed coat
A carpel is composed of _____.
stigma, style, and ovary
ovule, megasporocyte, and anther
petal, sepal, and stamen
ovary, ovule, and anther
zygote, anther, and endosperm - Answer- stigma, style, and ovary
A stamen consists of _____.
stigma and filament
anther and filament
stigma and anther
ovary and sepal
stigma and style - Answer- anther and filament
In angiosperms, pollination is the transfer of pollen grain to the _____ of a flower on the
same plant or another plant of the same species.
stigma
ovary
anther
