Chapter 29 Plant Diversity I How Plants Colonized Land

Chapter 29 Plant Diversity I: How Plants
Colonized Land.


1) According to the fossil record, plants colonized terrestrial habitats _____.
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A) in conjunction with insects that pollinated them
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B) in conjunction with fungi that helped provide them with nutrients from the soil
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C) to escape abundant herbivores in the oceans
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D) only about 150 million years ago - (correct answer) -
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B) in conjunction with fungi that helped provide them with nutrients from the soil
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2) The most direct ancestors of land plants were probably _____.
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A) kelp (brown alga) that formed large beds near the shorelines
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B) green algae
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C) photosynthesizing prokaryotes (cyanobacteria)
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D) liverworts and mosses - (correct answer) - B) green algae
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5) Which of these time intervals, based on plant fossils, came last (most recently)?
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A) extensive growth of gymnosperm forests
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B) colonization of land by early liverworts and mosses
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C) rise and diversification of angiosperms
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D) carboniferous swamps with giant horsetails and lycophytes - (correct answer) -
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C) rise and diversification of angiosperms
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6) Why have biologists hypothesized that the first land plants had a low, sprawling growth habit?
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A) They were tied to the water for reproduction and thus needed to remain in close contact with the
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B) The ancestors of land plants, green algae, lack the structural support to stand erect in air.
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, C) Land animals of that period were small and could not pollinate tall plants.
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D) There was less competition for space so they simply spread out flat. - (correct answer) -
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B) The ancestors of land plants, green algae, lack the structural support to stand erect in air.
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7) Spores and seeds have basically the same function—dispersal—
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but are vastly different because _____.
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A) spores have a protective outer covering; seeds do not
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B) spores have an embryo; seeds do not
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C) spores have stored nutrition; seeds do not
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D) spores are unicellular; seeds are not - (correct answer) - D) spores are unicellular; seeds are not
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8) You find a green organism in a pond near your house and believe it is a plant, not an alga. The myst
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ery organism is most likely a plant and not an alga if it _____.
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A) contains chloroplasts
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B) is surrounded by a cuticle
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C) does not contain vascular tissue
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D) has cell walls that are comprised largely of cellulose - (correct answer) -
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B) is surrounded by a cuticle
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11) According to our current knowledge of plant evolution, which group of organisms should feature c
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ell division most similar to that of land plants?
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A) unicellular green algae
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B) cyanobacteria
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C) charophytes
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D) red algae - (correct answer) - C) charophytes
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12) Which taxon is essentially equivalent to the "embryophytes"?
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A) Plantae
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B) Pterophyta
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C) Bryophyta
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D) Charophycea - (correct answer) - A) Plantae
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