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The parts of the plant that conduct water and dissolved minerals from the roots to the leaves are the


A) xylem.
B) stomata.
C) roots.
D) phloem.
E) cuticlE.

F) A) and C)
G) A) and B)

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In alternation of generations,two haploid gametes fuse in fertilization to form a ____ zygote.


A) haploid
B) diploid
C) tetraploid
D) No zygote is formed (Spores are formed instead) .
E) uniploid

F) A) and E)
G) A) and D)

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In the section "Investigating Life: Genetic Messages from Ancient Ecosystems",what was the advantage of looking for DNA samples in permafrost?


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 preserve 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 years.

F) A) and D)
G) D) and E)

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In flowering plants,the gametophyte is ______ the sporophyte.


A) larger than
B) the same size as
C) located on a separate plant from
D) much smaller than
E) absent and the entire plant is composed of

F) A) and B)
G) D) and E)

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The substance that strengthens and supports cell walls,allowing plants to grow tall and upright is


A) sporophyte.
B) gametophyte.
C) chlorophyll.
D) stomata.
E) lignin.

F) A) and D)
G) None of the above

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In the section "Investigating Life: Genetic Messages from Ancient Ecosystems",the decrease of herbs (grasses) and increase in mosses suggest that the climate in Siberia has become __________ in the past 10,000 years.


A) dryer
B) hotter
C) colder
D) wetter
E) saltier

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

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What advantage do gymnosperms have over ferns?


A) Gymnosperms produce pollen and do not require water to reproduce.
B) Gymnosperms have alternation of generations.
C) Gymnosperms have a vascular system,which allows them to grow taller.
D) Gymnosperms can grow larger gametophytes.
E) Gymnosperms can produce flowers and fruits to aid in seed dispersal.

F) A) and D)
G) All of the above

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The purpose of fruit is to provide nourishment for the growing plant after the seed germinates.

A) True
B) False

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Which group of plants lack true leaves and roots?


A) liverworts,hornworts,and mosses
B) ferns,club mosses,horsetails,and whisk ferns
C) ginkgo,cycads,conifers,and gnetophytes
D) monocots and eudicots
E) All plants lack true leaves and roots.

F) A) and E)
G) A) and D)

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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 part did plants evolve to absorb gases without drying out on dry land?


A) pollen
B) stomata
C) vascular tissues
D) cuticle
E) lignin

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

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What is the purpose of flowers?


A) to attract pollinators
B) to support gamete production
C) to capture wind-blown pollen
D) to protect reproductive structures
E) All answers are correct.

F) A) and D)
G) B) and E)

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Seedless vascular plants can ______ without water,but cannot ______ without water.


A) reproduce asexually;reproduce sexually
B) reproduce sexually;reproduce asexually
C) grow;reproduce
D) utilize phloem;utilize xylem
E) utilize xylem;utilize phloem

F) A) and D)
G) B) and D)

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In plants,


A) the diploid zygote develops into the sporophyte.
B) the haploid zygote develops into the sporophyte.
C) the haploid gametophyte develops into the sporophyte.
D) the diploid zygote develops into the gametophyte.
E) the haploid gametophyte produces gametes by meiosis.

F) A) and D)
G) B) and E)

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In the section "Investigating Life: Genetic Messages from Ancient Ecosystems",which of the three plants in the figure requires water to allow sperm to swim to the egg?


A) herbs (grasses)
B) mosses
C) shrubs

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

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In alternation of generations,a haploid gametophyte goes through mitosis to form a ____ gamete.


A) haploid
B) diploid
C) tetraploid
D) uniploid
E) No gametes are formed - this occurs in meiosis,not mitosis

F) B) and D)
G) C) and D)

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Gymnosperms and angiosperms evolved ______ allowing them to live and reproduce in drier habitats than bryophytes and seedless vascular plants.


A) spores
B) seeds,spores,and fronds
C) vascular tissue,spores,and fronds
D) pollen grains and seeds
E) fruit and flowers

F) A) and D)
G) B) and E)

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Many fern gametophytes are hermaphrodites,meaning they can produce both sperm and egg.Why is this necessary for a fern,but not for an angiosperm?


A) If one seed colonizes a new habitat,reproduction can occur in later stages.
B) The gametophyte can produce multiple types of spores.
C) The gametophyte can produce multiple types of seeds.
D) If one spore colonizes a new habitat,reproduction can occur in later stages.
E) Angiosperm gametes are diploid.

F) A) and E)
G) A) and D)

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Mosses are an example of which of the following?


A) autotrophs
B) primary consumers
C) detritovores
D) decomposers
E) heterotrophs

F) A) and B)
G) A) and C)

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In dry weather,plants reduce water loss by closing their


A) stomatA.
B) cuticle.
C) cell membranes.
D) vascular tissues.
E) All answers are correct.

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

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


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 gametophyte.
E) Producing seeds over spores is a disadvantagE.

F) C) and D)
G) A) and B)

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