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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 adaptation did plants have to make in taking up water and minerals when they moved to dry land?


A) Development of stomata
B) Production of pollen
C) Development of vascular tissue
D) Production of a cuticle
E) Production of lignin

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

Correct Answer

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The organelle that contains chlorophyll a and carries out photosynthesis in plants is the:


A) Mitochondria
B) Chloroplast
C) Central vacuole
D) Cell membrane
E) Golgi body

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

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The first land plants were bryophytes,which then branched into ferns,gymnosperms,and finally angiosperms.What advantage did angiosperms have over gymnosperms?


A) Angiosperms can produce flowers and fruits to aid in seed dispersal
B) Angiosperms produce pollen and do not require water to reproduce
C) Angiosperms go through alternation of generations
D) Angiosperms have a vascular system, this allowed them to grow taller
E) The angiosperms can produce spores which are more stable than seeds from gymnosperms

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

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In alternation of generations,a diploid sporophyte goes through meiosis to form ____ spores.


A) Diploid
B) Tetraploid
C) Haploid

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

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Why did the authors choose to look for the rubisco gene in their core samples?


A) Because plant cells do not have mitochondria
B) Because plant cells do not have a nucleus
C) Because it is used in respiration by all plants
D) Because it is used in photosynthesis by all plants
E) Because it is only present in angiosperms (flowering plants)

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

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Given the abundance of herbs and grasses and lack of vertebrate mitochondrial DNA in samples from Siberia 300-400,000 years ago,which of the following groups of animals was most likely to be present?


A) Mammals
B) Arthropods (insects)
C) Birds
D) Amphibians
E) Reptiles

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

Correct Answer

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The part of the plant that is a waxy coating that minimizes water loss from leaves is the:


A) Stomata
B) Root
C) Xylem
D) Phloem
E) Cuticle

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

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


A) Algin
B) Agar
C) Chlorophyll
D) The carotenoids
E) Lignin

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

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Which of the following is not a characteristic of all plants?


A) They are multicellular organisms
B) They are autotrophs
C) They are eukaryotes
D) They are heterotrophs
E) They carry out photosynthesis

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

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A cotyledon is:


A) The first leaf structure to arise in the embryo of an angiosperm
B) A spore-like structure used for reproduction in plants
C) The fruit produced by flowers of angiosperms
D) A tissue fragment of tissue used for reproduction in bryophytes
E) The zygote formed in ferns from the union of two gametes

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

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The part of the plant that allows for the exchange of carbon dioxide and oxygen is the:


A) Root
B) Stomata
C) Xylem
D) Phloem
E) Cuticle

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

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The four phyla of the gymnosperms are:


A) Monocotyledons, dicotyledons, conifers, and cycads
B) Horsetails, true ferns, whisk ferns, and club mosses
C) Conifers, monocotyledons, dicotyledons, and cycads
D) Mosses, liverworts, club mosses, and hornworts
E) Conifers, cycads, ginkgos, and gnetophytes

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

Correct Answer

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


A) If a seed colonized a new habitat alone, it could still reproduce
B) The gametophyte could produce multiple types of spores
C) The gametophyte could produce multiple types of seeds
D) If a spore colonized a new habitat alone, it could still reproduce
E) Angiosperm gametes are already diploid

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

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The adaptations that are most responsible for gymnosperms and angiosperms being able to live and reproduce in much drier habitats than bryophytes and plants such as club mosses are:


A) The production of spores and gemmae
B) The production of seeds, spores, and fronds
C) The production of vascular tissue, spores, fronds, and gemmae
D) The production of pollen grains and seeds
E) All of these are correct

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

Correct Answer

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The two types of vascular tissue in most plants are:


A) Lignin and xylem
B) Xylem and phloem
C) Lignin and phloem
D) Xylem and stomata
E) Stomata and lignin

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

Correct Answer

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The fruits of plants primarily function in:


A) Providing food for animals
B) Seed protection
C) Both protecting and dispersing seeds
D) Seed dispersal
E) Both feeding animals and protecting seeds

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

Correct Answer

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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) B) and E)
G) B) and D)

Correct Answer

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figure 18.18 figure 18.18   -In figure 18.18,the decrease of herbs (grasses) and increase in mosses would suggest that the climate in Siberia has become __________ in the past 10,000 years. A) Dryer B) Hotter C) Colder D) Wetter -In figure 18.18,the decrease of herbs (grasses) and increase in mosses would suggest that the climate in Siberia has become __________ in the past 10,000 years.


A) Dryer
B) Hotter
C) Colder
D) Wetter

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

Correct Answer

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Stomata allow plants to exchange carbon dioxide and oxygen with the atmosphere.

A) True
B) False

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