ORGANISMAL BIOLOGY BIOL 1030 – 002 Spring 2008BONUS ACTIVITY # 21. Which of the following is characteristic of alternation of generations in land plants? a) Haploid sporophytes make haploid spores. b) Gametophytes produce spores that develop into gametes. c) Sporophytes and gametophytes are typically similar in appearance. d) Meiosis in sporophytes produces haploid spores. e) Either the gametophyte or the sporophyte is unicellular. 2. Bryophytes have all of the following characteristics except a) multicellularity. b) specialized cells and tissues. c) lignified vascular tissue. d) walled spores in sporangia. e) a reduced, dependent sporophyte. 3. Which adaptation of plants aids transport of water, minerals, and nutrients a) nonflagellated spermb) xylem and phloemc) secondary compoundsd) cuticlee) alternation of generations4. Protists are alike in that all are a) multicellular b) photosyntheticc) marined) nonparasitice) eukaryotic5. According to the endosymbiotic theory of the origin of eukaryotic cells, how did mitochondria originate? a) from infoldings of the plasma membrane, coupled with mutations of genes for oxygen-using metabolism b) from engulfed, originally free-living prokaryotes c) by tertiary endosymbiosis d) from the nuclear envelope folding outward and forming mitochondrial membranes e) when a protoeukaryote engaged in a symbiotic relationship with a protobiont 6. Which of the following marine organisms produce potent neurotoxins that cause extensive fish kills, contaminate shellfish, and create severe respiratory irritation to humans along the shore? a) red algae b) dinoflagellates c) diplomonads d) euglenids e) golden algae 7. A biologist discovers an alga that is marine, multicellular, and lives at a depth reached only by blue light. This alga probably belongs to which group? a) red algaeb) brown algae c) green algae d) dinoflagellates e) golden algae 8. The vegetative (nutritionally active) bodies of most fungi are ? a) composed of hyphae b) referred to as a myceliumc) usually underground d) A and B only e) A, B, and
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