BIOLOGY
12th Edition
ISBN: 9781260169614
Author: Raven
Publisher: RENT MCG
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Chapter 56, Problem 8U
Summary Introduction
Introduction:
In an ecological pyramid, the biomass and productivity is represented. In each of the ecological pyramids, there are certain hierarchical levels, which are known as the trophic levels. The trophic levels contain organisms which share similar kinds of food and the similar kind of relationship with the primary producers.
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When substances are not broken down in metabolism but stored and passed on to higher trophic levels which of the following processes occurs?
Group of answer choices
a. Predation
b. Coevolution
c. Ecological Succession
d. Biological Magnification
e. Competition
a) Each trophic level, on average, will move 10% of the energy tied up in molecules to the next trophic level. How much of the energy from the sun is actually brought in to the first trophic level?
b) When the producers convert energy and tie it up in the first trophic level, it is brought in as heat. True or false?
c) Which of the following are true about ecosystems? Check all that apply.
They contain both living and nonliving components.They contain both living and nonliving components.
There is a transfer of energy through the system and some energy is lost as heat energy.There is a transfer of energy through the system and some energy is lost as heat energy.
Nutrients repeatedly cycle through the ecosystem.Nutrients repeatedly cycle through the ecosystem.
They represent the lowest level of biological organization.They represent the lowest level of biological organization.
The ultimate source of energy for most ecosystems is organic molecules.
At which point in the trophic pyramid is the greatest arount (not percentage) of energy lost?
A) Between the primary producers and the primary consumers
B) Between the primary consumers and the secondary consumers
C)Between the secondary consumers and the tertiary consumers
D) Between the secondary consumers and the primary producers
Chapter 56 Solutions
BIOLOGY
Ch. 56.1 - Prob. 1LOCh. 56.1 - Prob. 2LOCh. 56.1 - Prob. 3LOCh. 56.2 - Describe the different trophic levels.Ch. 56.2 - Distinguish between energy and heat.Ch. 56.2 - Explain how energy moves through trophic levels.Ch. 56.3 - Explain the meaning of trophic cascade.Ch. 56.3 - Prob. 2LOCh. 56.4 - Define ecosystem stability.Ch. 56.4 - Prob. 2LO
Ch. 56.4 - Prob. 3LOCh. 56.5 - Prob. 1LOCh. 56.5 - Prob. 2LOCh. 56 - Prob. 1DACh. 56 - Prob. 2DACh. 56 - Prob. 3DACh. 56 - Prob. 4DACh. 56 - Prob. 1IQCh. 56 - Prob. 2IQCh. 56 - Prob. 3IQCh. 56 - Prob. 4IQCh. 56 - Prob. 5IQCh. 56 - Prob. 6IQCh. 56 - Prob. 7IQCh. 56 - Which of the statements about groundwater is NOT...Ch. 56 - Photosynthetic organisms a. fix carbon dioxide. b....Ch. 56 - Prob. 3UCh. 56 - Nitrogen is often a limiting nutrient in many...Ch. 56 - Prob. 5UCh. 56 - Prob. 6UCh. 56 - Inverted ecological pyramids of real systems...Ch. 56 - Prob. 8UCh. 56 - Prob. 9UCh. 56 - The equilibrium model of island biogeography...Ch. 56 - Based on results from studies at Hubbard Brook...Ch. 56 - According to the trophic cascade hypothesis, the...Ch. 56 - At Cedar Creek Natural History Area, experimental...Ch. 56 - Given that ectotherms do not utilize a large...Ch. 56 - Given that, in general, energy input is greatest...Ch. 56 - Prob. 3SCh. 56 - Explain several detailed ways in which increasing...
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- In a food web, the numbers of each organism typically exist in a relatively stable proportion. If an oilspill killed a large amount of zooplankton, what would be the next thing that would happen?A The number of tiger sharks would decrease.B The number of phytoplankton would increase.C The number of clams, mackerels, and jellyfish would decrease.D The number of herring, whelk, squids, and loggerhead turtles would increase.arrow_forwardChoose a biological resource and address the following four questions using examples with that biological resource. a) Biomass production over time b) Carrying capacity and extinction threshold c) Management of the recruitment rate d) Describe two ways that climate change could impact the biological resource you selected for this question RESOURCE ECONOMICSarrow_forwardThe number of carnivores found at the top of an ecological pyramid is limited by thea. number of organisms above the top carnivores.b. number of trophic levels below the producers.c. biomass of the decomposers.d. amount of energy transferred to the top carnivores.arrow_forward
- Read the article on the impact of Phenological Changes on Trophic Dynamics. 2. Why is this mismatch occurring (please use details), and describe how this positively and negatively impact the bears? How could this positively and negatively impact the salmon? How could this positively and negatively impact the elderberry?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_forwardA particular species of butterfly is capable of surviving and reproducing both in open grasslands and in forested habitats. However, in the forested habitats this butterfly is heavily predated (eaten) by a forest bird species, so the beetle species avoids these areas and is generally found only in grasslands. Which of the following statements are true? Answer choices: A. The butterfly's realized niche includes both grasslands and forested habitats. B. The butterfly's fundamental niche includes only grasslands. C. The butterfly's realized niche includes only grasslands. D. The butterfly's fundamental niche includes both grasslands and forested habitats E. The butterfly and the forest bird species are in competition.arrow_forward
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