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The ripened ovary of a flower, which is adapted to disperse seeds, is called a/an


A) ovule.
B) casing.
C) fruit.
D) sporangium.

E) B) and D)
F) All of the above

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In plants, the vascular tissue made of dead cells that transport water and minerals from the roots is called


A) xylem.
B) phloem.
C) lignin.
D) meristem.

E) B) and C)
F) All of the above

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About 95% of all modern plant species


A) have a dominant sporophyte in their life cycle.
B) lack a sporophyte to house a gametophyte stage.
C) have a gametophyte adapted to house a sporophyte stage.
D) have flagellated sperm.

E) A) and D)
F) A) and C)

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What kind of entity is a lichen?


A) an association between a fungus and a brown alga
B) an association between a multicellular protist related to the brown algae and a bacterium
C) an association between a fungus and cyanobacteria or green algae
D) an association between a bryophyte and a fungus

E) C) and D)
F) B) and D)

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Which of the following statements correctly describes the alternation of generations in a plant life cycle?


A) Diploid sporophytes that produce spores by meiosis alternate with haploid gametophytes that produce gametes by mitosis.
B) Diploid sporophytes that produce gametes by meiosis alternate with haploid sporophytes that produce gametes by mitosis.
C) Diploid gametophytes that produce spores by mitosis alternate with haploid sporophytes that produce gametes by meiosis.
D) Diploid gametophytes that produce gametes by meiosis alternate with haploid sporophytes that produce spores by mitosis.

E) All of the above
F) A) and B)

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The ________ represents the sporophyte generation of a conifer, and the ________ produces gametophytes.


A) cone; tree
B) tree; cone
C) tree; pollen
D) seed; tree

E) None of the above
F) A) and B)

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Which of the following plants has a dominant sporophyte generation and a seed, but no fruit?


A) fern
B) pine tree
C) tulip
D) moss

E) C) and D)
F) None of the above

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Different kinds of mycorrhizae occur in different ecosystems. For example, as you walk up a mountain, you might find one type of mycorrhizae in lower regions and a second, different type of mycorrhizae in higher regions. Why are there mycorrhizae specific to certain ecosystems?


A) Mycorrhizae are adapted to the altitude.
B) Mycorrhizae are adapted to the type of slope of the land.
C) Mycorrhizae tend to colonize all levels of the mountain.
D) Mycorrhizae are adapted to the type of soil and the type of vegetation present.

E) A) and C)
F) A) and D)

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Which of the following options correctly represents the most likely sequence of the evolution of plants, from earliest to most recent?


A) bryophytes, seedless vascular plants, gymnosperms, angiosperms
B) seedless vascular plants, bryophytes, angiosperms, gymnosperms
C) bryophytes, seedless vascular plants, angiosperms, gymnosperms
D) bryophytes, gymnosperms, seedless vascular plants, angiosperms

E) A) and B)
F) All of the above

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The dominant stage of the moss life cycle is the


A) sporophyte.
B) gametangium.
C) pollen.
D) gametophyte.

E) B) and C)
F) A) and B)

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Crop plants can have higher densities of stomata on the underside of their leaves than on the surfaces of their leaves. Some scientists hypothesize that that the evolution of this adaptation enhanced the ability of these plants to regulate the rate of CO2 uptake for each surface. -Suppose you wanted to test this hypothesis using sunflower plants. Which of the following would be the best procedure regarding the groups you use in your experiment?


A) Choose two equal-size groups of sunflower plants. One would be the experimental group and one would be the control group.
B) Choose equal-size groups of sunflower plants and zinnia plants. The sunflower plants would be the experimental group and the zinnia plants would be the control group.
C) Choose two groups of sunflower plants. The experimental group would have twice as many plants as the control group.
D) Choose two groups of sunflower plants. The experimental group would have half as many plants as the control group.

E) C) and D)
F) B) and C)

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A mushroom is


A) composed of many threadlike filaments called mycorrhizae.
B) specialized to obtain most of the nutrients for the fungal mycelium.
C) an independent stage in the alternation of generations of the fungal life cycle.
D) an aboveground reproductive structure connected to a mycelium.

E) None of the above
F) A) and B)

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Hallucinations, nervous spasms, and even death can result when humans consume grain infested with


A) corn smut.
B) chytrids.
C) coccidioidomycosis.
D) ergots.

E) All of the above
F) C) and D)

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The heterokaryotic phase of a fungal life cycle is a


A) stage in which the hyphae contain only one type of haploid nucleus.
B) stage in which hyphae contain two genetically different haploid nuclei.
C) stage in which hyphae contain two genetically different diploid nuclei.
D) triploid stage formed by the fusion of a diploid nucleus with the haploid nucleus of a compatible hypha.

E) C) and D)
F) A) and B)

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The loss of plant biodiversity, including the wild relatives of crop species, is harmful because these wild relatives


A) feed most of the world's population.
B) may be suitable for domestication and regional production.
C) are often tastier than existing crops.
D) are a source of genetic diversity that could be used to modify or bolster existing crops.

E) All of the above
F) B) and C)

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The evolution of easily modified flower colors that can make plants attractive to animals was an important factor in angiosperm evolution because


A) plants have no way to cross-pollinate without the intervention of animals.
B) animals are more effective at delivering pollen to other flowers than is the wind.
C) flower color attracts animals that can disperse the seeds of the plant.
D) successful evolution requires interactions between plants and animals.

E) A) and B)
F) A) and C)

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Which of the following statements regarding fungi is false?


A) Fungi are important decomposers in ecosystems.
B) Fungi can break down only plant material.
C) The distinctive flavor of certain cheeses is due to fungi.
D) The first antibiotic discovered came from a fungus.

E) A) and B)
F) B) and C)

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The ________ is the protective chamber that houses the ovule and later matures to become the fruit.


A) ovary
B) carpel
C) sepals
D) stigma

E) None of the above
F) B) and C)

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Which of the following would be the best evidence to demonstrate that mushrooms are living, reproducing organisms?


A) flagellated sperm
B) pollen
C) lignin
D) spore production and dispersal

E) All of the above
F) None of the above

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A cocklebur is dispersed by ________, whereas most fleshy, edible fruits are eaten by animals that ________.


A) wind; fully digest the fruits, including the seeds, which are killed
B) water currents; defecate the intact seeds
C) hitching rides on animals; fully digest the fruits, including the seeds, which are killed
D) hitching rides on animals; defecate the intact seeds

E) B) and C)
F) A) and D)

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