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 Chapter 30, 10th edition
Q1.Which of the following adaptations is common to all seed plants? ( Concept 30.1)
A) B) C) D) E) ovules
reduced gametophytes
heterospory
pollen
All of the listed responses are correct.
The Answer is : D
Q2.Which one of the following is true of seed plants, but NOT true of seedless plants? ( Concept 30.1)
A) B) C) D) E) The sporophyte is dependent on the gametophyte.
The spore is the main means of dispersing the offspring.
A film of water is necessary for sperm to come in contact with eggs.
The sporophyte is large, and the gametophyte is small and independent.
The gametophyte is reduced and dependent on the sporophyte.
The Answer is : E
Q3.The closest seedless relatives of seed plants produce one kind of spore that gives rise to a bisexual
gametophyte. What does this suggest about the ancestors of seed plants? ( Concept 30.1)
A) B) C) D) E) They were gymnosperms.
They were heterosporous.
They were bryophytes.
They produced separate male and female gametophytes.
They were homosporous.
The Answer is : E
Q4.The eggs of seed plants are fertilized within ovules, and the ovules then develop into __________. (
Concept 30.1)
A) B) C) D) E) The Answer is : E
ovaries
gametophytes
spores
fruit
seeds
Q5.The cells within pollen grains are __________ and together comprise the __________. ( Concept 30.1)
A) B) C) D) E) diploid ... a new sporophyte
diploid ... spores
haploid ... spores
diploid ... sperm nuclei
haploid ... male gametophyte
The Answer is : E
Q6.Which example below is evidence provided by living gymnosperms of an evolutionary transition between
seedless and seed plants? ( Concept 30.1)
A) B) C) D) E) In gymnosperms, two sperm are discharged into the pollen tube.
The sperm of some gymnosperms have flagella.
Gymnosperms only have one integument.
Some gymnosperms do not have reduced gametophytes.
The sperm of gymnosperms do not require water or mobility for fertilization.
The Answer is : B
Q7.Which of the following best states the advantages that seeds have over spores? ( Concept 30.1)
A) Seeds can survive even in conditions that are unfavorable for the parent plants.
B) Most seeds are poisonous; therefore, they are not consumed by animals and persist in the
environment for long periods of time.
C) Seeds contain embryonic plants, an abundant food supply, and a protective covering.
D) Seeds can survive for extended periods of time at reduced metabolic rates.
E) Seeds are single cells, demanding fewer nutrients from the parent plants.
The Answer is : C
Q8.Which gymnosperm phylum is characterized by large cones and fern-like leaves and thrived during the
Mesozoic? ( Concept 30.2)
A) B) C) D) E) The Answer is : A
Cycadophyta
Ginkgophyta
Anthopyta
Coniferophyta
Gnetophyta
Q9.Dietary supplements and decongestants containing ephedrine have recently become more strongly
regulated in the United States. Which phylum contains the plant from which ephedrine is extracted? ( Concept
30.2)
A) B) C) D) E) phylum Gnetophyta
phylum Ginkgophyta
phylum Anthopyta
phylum Cycadophyta
phylum Coniferophyta
The Answer is : A
Q10.What global change occurring between the Carboniferous period and the Permian period likely contributed
to the success of the gymnosperms? ( Concept 30.2)
A) An asteroid hit Earth, leading to mass extinctions that made way for gymnosperms to take
over lands where other plants had perished.
B) Reptiles decreased in diversity and were replaced with amphibians better adapted for seed
dispersal.
C) The climate became drier and warmer.
Insects developed flight.
D) The breakup of Pangaea changed the flora and fauna of Earth dramatically.
The Answer is : C
Q11.What is located in the scalelike structures packed densely in pollen cones? ( Concept 30.2)
A) B) C) D) E) sporophytes
sporangia
developing pollen tubes
developing seedlings
megasporocytes
The Answer is : B
Q12.Each pollen grain of a gymnosperm contains a __________. ( Concept 30.2)
A) B) C) D) E) male gametophyte
microsporocyte
megasporocyte
ginkgophyte
fertilized ovule
The Answer is : A
Q13.In ovulate cones, megasporocytes undergo __________ and produce __________ megaspores. (
Concept 30.2)
A) B) C) D) E) meiosis ... diploid
meiosis ... haploid
mitosis ... diploid
mitosis ... haploid
Depending on environmental conditions, any of the listed responses may occur.
The Answer is : B
Q14.In a typical conifer, how long does it take for fertilization to occur after pollination? ( Concept 30.2)
A) B) C) D) E) It takes one season.
Pollination occurs after fertilization.
It takes three years.
The processes are simultaneous.
It takes one year.
The Answer is : E
Q15.The diploid generation of the plant life cycle always __________. ( Concept 30.3)
A) B) C) D) E) produces spores
is larger and more conspicuous than the haploid stage
produces gametes (eggs and sperm)
is called the gametophyte
develops from a spore
The Answer is : A
Q16.Which types of angiosperms would most likely be wind-pollinated rather than animal-pollinated? ( Concept
30.3)
A) B) C) D) E) The Answer is : D
maize and wheat
oak and maple trees
roses and tiger lilies
The first and second responses are correct.
None of the listed responses is correct. Plants with flowers are not wind-pollinated.
Q17.Like gymnosperms, many grasses and angiosperm trees are wind-pollinated. To conserve energy, these
angiosperms do not produce complete flowers (complete flowers have all four of the basic parts). Which part
would be unnecessary for wind-pollinated angiosperms? ( Concept 30.3)
A) B) C) D) E) ovaries
anthers
petals
fruits
sepals
The Answer is : C
Q18.The portion of a flower that receives the pollen is the __________. ( Concept 30.3)
A) B) C) D) E) filament
anther
style
ovary
stigma
The Answer is : E
Q19.During pollination, pollen grains are transferred from the __________ to the __________. ( Concept
30.3)
A) B) C) D) E) anther ... sepal
stigma ... ovary
carpel ... stigma
anther ... stigma
ovary ... anther
The Answer is : D
Q20.A pea pod is formed from __________. A pea inside the pod is formed from __________. ( Concept
30.3)
A) B) C) D) E) The Answer is : E
endosperm ... an ovary
an ovary ... a pollen grain
an ovule ... a carpel
an anther ... an ovule
an ovary ... an ovule
Q21.After fertilization, the __________ develops into a seed and the __________ develops into a fruit. (
Concept 30.3)
A) B) C) D) E) ovary ... ovule
egg ... ovule
egg ... ovary
ovule ... ovary
pollen grain ... ovule
The Answer is : D
Q22.Which of the following best describes the function of fruits? ( Concept 30.3)
A) B) C) D) E) reward for pollinators
protection and dispersal of seeds
to distract herbivores from eating the leaves
food storage for the plant to use over the winter
Depending on the plant species, any of the listed responses are possible.
The Answer is : B
Q23.A plant is said to be cross-pollinated if __________. ( Concept 30.3)
A) B) C) D) E) pollen grains are transferred to a flower on a different plant
it is pollinated by wind
its source of pollen is a different species of plant
pollen grains are transferred from a different flower on the same plant
it is pollinated by insects
The Answer is : A
Q24.The pollen tube releases two sperm cells into the embryo sac. The result of this is the __________. (
Concept 30.3)
A) union of one sperm nucleus with the egg nucleus and the disintegration of the other sperm
nucleus
B) union of one sperm nucleus with the egg nucleus and of the other sperm nucleus with two
nuclei of the central cell, forming a triploid nucleus called the endosperm
C) formation of a gametophyte
D) union of the two sperm nuclei, forming a zygote
E) fusion of both sperm nuclei with the egg nucleus and the formation of a triploid zygote
The Answer is : B
Q25.Of the following, which is a difference in how reproduction occurs in gymnosperms compared to
angiosperms? ( Concept 30.3)
A) B) C) D) Double fertilization only occurs in gymnosperms.
Only gymnosperms can contain male and female sporangia on the same plant.
Only angiosperm pollen grains form pollen tubes.
Only the sperm of angiosperms combine with two central cell nuclei to form triploid
endosperm.
E) Only angiosperms have reduced gametophytes.
The Answer is : D
Q26.The triploid nucleus of the embryo sac develops into the __________. ( Concept 30.3)
A) B) C) D) E) seed
carpel
endosperm
embryo
fruit
The Answer is : C
Q27.In gymnosperms, the seed coat develops from the integument. In angiosperms, the seed coat develops
from the __________. ( Concept 30.3)
A) B) C) D) E) ovary wall
endosperm
receptacle
female gametophyte
integuments
The Answer is : E
Q28.The vast majority of angiosperms with two cotyledons formerly classified as __________ are now
classified as __________. ( Concept 30.3)
A) B) C) D) E) The Answer is : C
monocots ... magnoliids
eudicots ... basal angiosperms
dicots ... eudicots
monocots ... dicots
eudicots ... dicots
Q29.Which of the following lists of features characterizes eudicots? ( Concept 30.3)
A) B) C) D) E) scattered vascular bundles, netlike veins, floral parts in multiples of five
two cotyledons, netlike veins, taproot usually present
pollen grains with three openings, floral parts in multiples of three, netlike veins
one cotyledon, vascular bundles in rings, pollen grains with three openings
leaves with parallel veins, taproot usually present, vascular bundles arranged in rings
The Answer is : B
Q30.A bright pink flower with deep floral tubes will most likely be pollinated by which mechanism? ( Concept
30.3)
A) B) C) D) E) self-pollination
wind
birds with long beaks
honeybees
bats
The Answer is : C
Q31.Where in an angiosperm would you find a megasporangium?
A) B) C) D) E) packed into pollen sacs within the anthers found on a stamen
enclosed in the stigma of a flower
inside the tip of a pollen tube
in the style of a flower
within an ovule contained within an ovary of a flower
The Answer is : E
Q32.A fruit is most commonly :
A) B) C) D) E) The Answer is : D
an enlarged ovule.
a thickened style.
a modified root.
a mature ovary.
a mature female gametophyte.
Q33.With respect to angiosperms, which of the following is incorrectly paired with its chromosome count?
A) B) C) D) E) zygote—2n
megaspore—2n
egg—n
sperm—n
microspore—n
The Answer is : B
Q34.Which of the following is not a characteristic that distinguishes gymnosperms and angiosperms from other
plants?
A) B) C) D) E) pollen
dependent gametophytes
integuments
ovules
alternation of generations
The Answer is : E
Q35.Gymnosperms and angiosperms have the following in common except
A) ovules.
B) vascular tissue.
C) seeds.
D) ovaries.
E) pollen.
The Answer is : D