Chapter 29: Plant Diversity I: How Plants Colonized Land
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B) poleward migration of centrosomes during prophase.
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B) cellulose. mp mp
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All of the following are common to both charophytes and land plants except
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A) sporopollenin.
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B) lignin. mp mp
C) chlorophyll a.
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D) cellulose. mp mp
E) chlorophyll b. - answer-Lignin
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In animal cells and in the meristem cells of land plants, the nuclear envelope disintegrates during mitosis. This
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disintegration does not occur in the cells of most protists and fungi. According to our current knowledge of plant
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evolution, which group of organisms should feature mitosis 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 mp mp
D) red algae mp mp mp
E) multicellular green algae - answer-Charophytes
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On a field trip, a student in a marine biology class collects an organism that has differentiated organs, cell walls of
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cellulose, and chloroplasts with chlorophyll a. Based on this description, the organism could be a brown alga, a red alg
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a green alga, a charophyte recently washed into the ocean from a freshwater or brackish water source, or a land plant
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plant?
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A) alternation of generations
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B) sporopollenin
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C) rings of cellulose-synthesizing complexes
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D) flagellated sperm
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E) embryos - answer-Embryos
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5) Some green algae exhibit alternation of generations. All land plants exhibit alternation of generations. No charophyt
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exhibit alternation of generations. Keeping in mind the recent evidence from molecular systematics, the correct
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interpretation of these observations is that:
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A) charophytes are not related to either green algae or land plants.
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B) plants evolved alternation of generations independently of green algae.
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C) alternation of generations cannot be beneficial to charophytes.
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D) land plants evolved directly from the green algae that perform alternation of generations.
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E) scientists have no evidence to indicate whether or not land plants evolved from any kind of alga. - answer-plants
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evolved alternation of generations independently of green algae.
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A student encounters a pondweed which, judging from its appearance, seems to be a charophyte. She brings a sampl
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back to her biology lab. Using only a compound light microscope to study the sample, which of the following features
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1. molecular structure of enzymes inside peroxisomes
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2. structure of sperm cells
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3. presence of phragmoplasts
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4. rings of cellulose-synthesizing complexes
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B) poleward migration of centrosomes during prophase.
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C) synthesis of sporopollenin during G1 and G2 phases.
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D) construction of the cell plate during cytokinesis.
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E) reinforcement of the nuclear envelope during S phase. - answer-construction of the cell plate during cytokinesis.
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