Campbell Biology
12th Edition
ISBN: 9780135188743
Author: Urry
Publisher: PEARSON
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Textbook Question
Chapter 56, Problem 4TYU
Which of the following is a consequence of biological magnification?
- (A) Toxic chemicals in the environment pose greater risk to top-level predators than to primary consumers.
- (B) Populations of top-level predators are generally smaller than populations of primary consumers.
- (G) The biomass of producers in an ecosystem is generally higher than the biomass of primary consumers.
- (D) Only a small portion of the energy captured by producers is transferred to consumers.
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a) Describe the relative numbers of producers, primary consumers, secondary consumers, and tertiary consumers expected in an ecosystem based on the food chain depicted
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b) Describe the shape that this pyramid of numbers would take.
algae
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c) If you were to include decomposers in the food chain above, where would you place them? Explain your answer.
At which point in the trophic pyramid is the greatest arount (not percentage) of energy lost?
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B) Between the primary consumers and the secondary consumers
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D) Between the secondary consumers and the primary producers
A researcher measures the amount of mercury (a persistant toxic chemical) in the fish of a lake ecosystem. The concentration of mercury is 10 times higher in the tertiary consumer fish species compared to the amount in the primary consumer fish species.
A) Explain this result using the term bioaccumulation and biomagnification.
B) If a bear eats mainly the tertiary consumer fish from this lake, how would you expect the mercury concentration in the bear to compare to the fish?
Chapter 56 Solutions
Campbell Biology
Ch. 56.1 - Explain why it is too narrow to define the...Ch. 56.1 - Identify the four main threats to biodiversity and...Ch. 56.1 - WHAT IF? Imagine two populations of a fish...Ch. 56.2 - How does the reduced genetic diversity of small...Ch. 56.2 - If there were 100 greater prairie chickens in a...Ch. 56.2 - WHAT IF? In 2005, at least ten grizzly bears in...Ch. 56.3 - Prob. 1CCCh. 56.3 - Prob. 2CCCh. 56.3 - Prob. 3CCCh. 56.4 - How can the addition of excess mineral nutrients...
Ch. 56.4 - Prob. 2CCCh. 56.4 - MAKE CONNECTIONS Mutagens are chemical and...Ch. 56.5 - What is meant by the term sustainable development?Ch. 56.5 - Prob. 2CCCh. 56.5 - WHAT IF? Suppose a new fishery is discovered, and...Ch. 56 - Give at least three examples of key ecosystem...Ch. 56 - Why is the minimum viable population size smaller...Ch. 56 - Prob. 56.3CRCh. 56 - Prob. 56.4CRCh. 56 - Prob. 56.5CRCh. 56 - One characteristic that distinguishes a population...Ch. 56 - Prob. 2TYUCh. 56 - Prob. 3TYUCh. 56 - Which of the following is a consequence of...Ch. 56 - Which of the following strategies would most...Ch. 56 - Prob. 6TYUCh. 56 - Prob. 7TYUCh. 56 - Prob. 8TYUCh. 56 - WRITE ABOUT A THEME: INTERACTIONS One factor...Ch. 56 - Prob. 10TYU
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Which of the following statements BEST describes energy transfer in an ecosystem? A. If the primary producer has 175,000 kcal available, the secondary consumer will receive 17,500 kcal from the primary consumer. B. If the primary consumer has 175,000 kcal available, the secondary consumer will receive 17,500 kcal from the primary consumer. C. If the primary consumer has 175,000 kcal available, the tertiary consumer will receive 175 kcal from the secondary consumer. D. If the primary producer has 175,000 kcal available, the tertiary consumer will receive 17,500 kcal from the secondary consumer.arrow_forward56) To recycle nutrients, an ecosystem must have, at a minimum, A) producers. B) producers and decomposers. C) producers, primary consumers, and decomposers. D) producers, primary consumers, secondary consumers, and decomposers. E) producers, primary consumers, secondary consumers, top carnivores, and decomposers. 57) Which of the following is an example of bioremediation? A) bulldozing the land around an abandoned strip mine to combat erosion B) scraping a river bottom with a tool to remove contaminated sediments C) reconfiguring a river channel to increase the flow of water down a river D) using microorganisms to eat oil in marine waters after a tanker oil spillarrow_forwardWhich one of the following has the largest population in a food chain?(a) Producers(b) Primary consumers(c) Secondary consumers(d) Decomposersarrow_forward
- Which of the following organisms is incorrectlypaired with its trophic level?(A) cyanobacterium—primary producer(B) grasshopper—primary consumer(C) zooplankton—primary producer(D) fungus—detritivorearrow_forwardWhich of the following is a component of an ecosystem but not of an ecological community? (a) a producer (b) water (c) a secondary consumer (d) a primary consumerarrow_forwardChoose TWO (2) different types of ecosystem, in your surrounding area. The area can be in your yard or in your neighbourhood, which is easily accessible to you. a) the two types of ecosystems that can be identified during the observation b) abiotic and biotic factors in each ecosystem (FOUR examples ofinteractions).arrow_forward
- What would happen to an ecosystem if (a) all of its decomposers and detritus feeders were eliminated, (b) all of its producers were eliminated, and (c) all of its insects were eliminated? Could an ecosystem function with only producers and decomposers and no consumers? Explain.arrow_forwardWhy is the change in human footprint relatively low for the most agriculturally suitable land? a) Very little of the land is highly suitable for agriculture b) Cities put little pressure on the environment, and tend to be in very agriculturally suitable areas c) Pressure was already high therearrow_forward1) A scientist finds that the gross primary productivity of the grasslands of the central United States is 55 g / m2 / year. If the respiration loss is 33 g / m2 / year, what is the net primary productivity? a) subtraction from gross productivity and respiration.b) The same as primary productivity.c) The value of respiration.d) The sum of gross primary productivity and respiration.arrow_forward
- "Write a scenario describing what would happen to an ecosystem or to the human system in the event that:(a) All producers are killed through loss of fertility of the soil or through toxic contamination, (b) decomposers and detritus feeders are eliminated. Support all of your statements with reasons drawn from your understanding of the way ecosystems function"arrow_forwardIn an ecosystem, energy? A) Cycles along with chemical nutrients B) comes ultimately from bacteria C) typically flows from consumers to producers to decomposers D) typically flows from producers through a series of consumersarrow_forwardAs a result of conventional approach to nature a) water,forests,land all are coomodified to maximise profits b)Carbon dioxide emissions are decreased to minimum c)ecological conditions have imroved on our planet d)humans took control of nature completelyarrow_forward
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