BIOLOGY
12th Edition
ISBN: 9781260169614
Author: Raven
Publisher: RENT MCG
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Chapter 57, Problem 6U
Deep-sea hydrothermal vent communities
a. get their energy from photosynthesis in the photic zone near the surface.
b. use bioluminescence to generate food.
c. are built on the energy produced by the activity of chemoautotrophs that oxidize sulfur.
d. contain only bacteria and other microorganisms.
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The cyanobacteria in Lake Erie would best be described as .a. decomposersb. tertiary consumersc. primary producersd. heterotrophse. secondary consumers
Which of the following statements DOES NOT describe microbes in an aquatic system?
A. Bacterial and archaeal species are equally represented in freshwater and marine.
B. Contains a large number of viruses.
C. Converts dissolved organic carbon to utilizable forms of higher trophic level organisms.
D. Possess several anti-predation mechanisms.
Which of the following is a process of the nitrogen cycle that involves the conversion of nitrogen gas to ammonia?
a.Nitrogen fixation
b.Nitrification
c.Ammonification
d.Denitrification
Chapter 57 Solutions
BIOLOGY
Ch. 57.1 - Prob. 1LOCh. 57.1 - Prob. 2LOCh. 57.1 - Prob. 3LOCh. 57.2 - Prob. 1LOCh. 57.2 - Explain the primary factors that determine which...Ch. 57.3 - Prob. 1LOCh. 57.3 - Prob. 2LOCh. 57.3 - Prob. 3LOCh. 57.4 - Prob. 1LOCh. 57.4 - Prob. 2LO
Ch. 57.5 - Prob. 1LOCh. 57.5 - Differentiate between point-source pollution and...Ch. 57.5 - Prob. 3LOCh. 57.5 - Prob. 4LOCh. 57.6 - Prob. 1LOCh. 57.6 - Prob. 2LOCh. 57 - Prob. 1DACh. 57 - Prob. 2DACh. 57 - Prob. 1IQCh. 57 - Prob. 2IQCh. 57 - 1. The Coriolis effect a. drives the rotation of...Ch. 57 - What two factors are most important in biome...Ch. 57 - In a rain shadow, air is cooled as it rises and...Ch. 57 - Thermal stratification in a lake a. is not...Ch. 57 - Prob. 5UCh. 57 - Deep-sea hydrothermal vent communities a. get...Ch. 57 - Prob. 7UCh. 57 - Which of the following is a point source of...Ch. 57 - If the Earth were not tilted on its axis of...Ch. 57 - Prob. 2ACh. 57 - If a pesticide is harmless at low concentrations...Ch. 57 - Prob. 4ACh. 57 - Discuss how figure 58.1 explains the pattern...Ch. 57 - Prob. 2SCh. 57 - If the world has experienced global warming many...Ch. 57 - What can be done to prevent new diseases from...
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- Nitrogen is fixed in ecosystems in ways stated below. Which one of the statements below is false? A. By cyanobacteria B. By electrical discharges in the atmosphere C. By industrially synthesised fertilizer D. By denitrificationarrow_forwardWhich of the following is not true about microbial communities? A. They help herbivorous mammals to derive nutrition from otherwise indigestible cellulose. B. They consume some of the digesting food for their own nutrition. C. They help with vitamin production in the human digestive tract. D. They are present only in herbivores. E. None of the above answer choices are correct. (That is, answer choices A, B, C and D are all true statements.)arrow_forwardBiological magnification occurs whena. pollutants increase in concentration in tissues at higher trophic levels.b. the effect of a pollutant is magnified by chemical interactions within organisms.c. an organism is placed under a dissecting scope.d. a pollutant has a greater than expected effect once ingested by an organism.arrow_forward
- Describe the roles of microbes in: a. The formation of root nodules and The Rhizosphere c. The Ruminant Stomach d. The causes and consequences of algal blooms e. Life in deep sea vents (Tubeworms) f. Coral Reefs and Bleaching g. Bioremediationarrow_forwardWhat is the difference in microbial population from water sediment and neustonic source? A. Ratio of phototrophic and heterotrophic microbes. B. Ratio of anaerobic microbes to aerobic microbes. C. Ratio of heterotrophic and cellulolytic microbes. D. All statements are acceptable descriptions.arrow_forwardorganisms that use light energy as carbon source is known as Select one: a. chemoHeterotrophs b. photoheterotrophs c. photoautotrophs d. chemoautotrophsarrow_forward
- In the context of the phosphorous cycle, which of the following processes is indicated by arrow ac? A. Erosion B. Convection C. Transpiration D. Evaporation E. Nitrogen fixationarrow_forwardInaquatic ecosystems, the major agents of decomposition are:a.aquatic fungi.b.bacteria.c.algae.d.detritivorous fish.e.piscivorous fisharrow_forwardWhich of the following statement is INCORRECT?A. Bacteria can decompose organic nitrogen.B. Biological nitrogen fixation is carried out by bacteria.C. Ammonia, ammonium ion and nitrate ion are examples of biological availablenitrogen.D. Denitrifying bacteria converts atmospheric dinitrogen gas into nitrate ion.E. Nitrification is the process of converting reactive nitrogen into another form ofreactive nitrogen.arrow_forward
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