Biology: Concepts and Investigations
5th Edition
ISBN: 9781260259049
Author: Hoefnagels
Publisher: MCG
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Textbook Question
Chapter 38, Problem 2MCQ
Cyanobacteria are photosynthetic bacteria that live in water. Two species, isolated from the same habitat, use different wavelengths of light in photosynthesis. This is an example of
a. competitive exclusion.
c.
b. commensalism.
d. biomagnification.
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Chapter 38 Solutions
Biology: Concepts and Investigations
Ch. 38.1 - Distinguish among communities, ecosystems, and...Ch. 38.1 - Prob. 2MCCh. 38.1 - Distinguish between habitat and niche.Ch. 38.1 - Prob. 4MCCh. 38.1 - Prob. 5MCCh. 38.1 - Prob. 6MCCh. 38.1 - Prob. 7MCCh. 38.2 - Prob. 1MCCh. 38.2 - Prob. 2MCCh. 38.2 - Prob. 3MC
Ch. 38.2 - Prob. 4MCCh. 38.3 - Identify the trophic levels of a food chain.Ch. 38.3 - Prob. 2MCCh. 38.3 - Prob. 3MCCh. 38.3 - Prob. 4MCCh. 38.3 - Prob. 5MCCh. 38.3 - Prob. 6MCCh. 38.4 - Prob. 1MCCh. 38.4 - Prob. 2MCCh. 38.4 - Prob. 3MCCh. 38.4 - Prob. 4MCCh. 38.4 - Prob. 5MCCh. 38.5 - Prob. 1MCCh. 38.5 - Prob. 2MCCh. 38 - Prob. 1MCQCh. 38 - Cyanobacteria are photosynthetic bacteria that...Ch. 38 - Prob. 3MCQCh. 38 - Prob. 4MCQCh. 38 - A large tree falls over in an old-growth forest,...Ch. 38 - Prob. 6MCQCh. 38 - In a prairie, which trophic level should have the...Ch. 38 - Prob. 8MCQCh. 38 - Prob. 9MCQCh. 38 - Prob. 1WIOCh. 38 - Prob. 2WIOCh. 38 - Prob. 3WIOCh. 38 - Prob. 4WIOCh. 38 - Prob. 5WIOCh. 38 - Prob. 6WIOCh. 38 - Prob. 7WIOCh. 38 - Prob. 8WIOCh. 38 - Prob. 9WIOCh. 38 - 1. Review the definitions of ecology, populations,...Ch. 38 - Prob. 2PIT
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- 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.arrow_forwardWhich of the following events is NOT a common among microbes in the air? A. Exposure to UV light. B. Relocated due to updrafts. C. Cellular death due to desiccation. D. Decrease is population due to competition.arrow_forwardNitrogen 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_forward
- Consider figure 49.8 in the textbook. Please choose all applicable options. a.The data shows that the ability of invasive ants to invade is dependant on zone dryness. b.The data shows that the ability of invasive ants to invade is dependant on abiotic factors. c.The data shows that the ability of invasive ants to invade is dependant on the presence of native ants. d.The data shows that the ability of invasive ants to invade is dependant on biotic factors.arrow_forwardThe large intestine of humans is populated by a complex community of benign microorganisms (not harmful) which compete for nutrients and may prevent pathogenic (harmful) microorganisms from becoming established. Which term would best describe this?a. competitive exclusionb. selective pressurec. successiond. environmental resistancearrow_forwardThe cyanobacteria in Lake Erie would best be described as .a. decomposersb. tertiary consumersc. primary producersd. heterotrophse. secondary consumersarrow_forward
- Which 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_forwardWhat is one of the primary benefits of bioremediation? Group of answer choices A. to improve human health with the help of living organisms such as bacteria B. to clean up areas polluted with toxic compounds by using bacteria C. to improve soil quality for plant growth by using bacteria D. to improve bacteria for production of useful chemicalsarrow_forwardBioprospecting is not always a sustainable approach to natural product discovery because: Select one alternative: A. microorganisms are not always able to be culturable. B. indigenous groups exploit available biological resources. C. compounds may not be produced under tested conditions. D. all known environments have already been 'mined' for natural products. E. Option A and C are both correct.arrow_forward
- Use the graphs to answer the question below. In each of the figures, the x-axis represents time, and the y-axis represe of Species 2. is A. В. C. D. Which one of the graphs above illustrates competitive exclusion? O Graph A O Graph B Graph C O Graph Darrow_forwardWhich 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.Denitrificationarrow_forwardFor Eicchornia crassipes (the Water hyacinth) which of the following is most correct: a. It has been successfully controlled outside its original natural range by the introduction of natural enemies b. It has no known natural enemies c. It has never been successfully controlled using natural biocontrol agents d. It is naturally controlled by many local enemies outside its original natural rangearrow_forward
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