Biology
12th Edition
ISBN: 9780134813448
Author: Audesirk, Teresa, Gerald, Byers, Bruce E.
Publisher: Pearson,
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Chapter 29.2, Problem 3CYL
Summary Introduction
To describe:
The importance of detritivores and decomposers to ecosystem function.
Introduction:
Ecosystem consists of various trophic levels which are interconnected to each other. Producers forms the first trophic level and detritivores and decomposers forms the final trophic level within an ecosystem. Detritivores and decomposers are the lower organisms that feed upon wastes, dead, and decaying matter. Detritivores include nematode worms, earthworms, millipedes, and larvae of some species of flies. Decomposers include
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why are omnivores, decomposers and detrivores not in any trophic level?
“The pyramid of energy is always upright” states that
A)The energy conversion efficiency of herbivores is better than carnivores.
B)The energy conversion efficiency of carnivores is better than herbivores
C)Producers have the lowest energy conversion efficiency
D)Energy conversion efficiency is the same in all trophic levels
Discuss the valuable significance of some nutrients in an ecosystem.
Chapter 29 Solutions
Biology
Ch. 29.1 - explain why nutrients cycle within and between...Ch. 29.2 - Prob. 1TCCh. 29.2 - Prob. 1CSCCh. 29.2 - Prob. 1CYLCh. 29.2 - describe how energy flows through an ecosystem?Ch. 29.2 - Prob. 3CYLCh. 29.2 - explain how the inefficiency of energy transfer...Ch. 29.3 - Prob. 1TCCh. 29.3 - What incentives cause humans to capture nitrogen...Ch. 29.3 - explain why nutrients cycle within and among...
Ch. 29.3 - summarize the water, nitrogen, carbon, and...Ch. 29.4 - Prob. 1HYEWCh. 29.4 - Prob. 1TCCh. 29.4 - Prob. 2TCCh. 29.4 - Prob. 1CTCh. 29.4 - Prob. 1CYLCh. 29.4 - Prob. 2CYLCh. 29.4 - Prob. 3CYLCh. 29.4 - Prob. 2CTCh. 29 - Prob. 1MCCh. 29 - Which of the following is not a major reservoir in...Ch. 29 - Prob. 3MCCh. 29 - Net primary production per unit area is likely to...Ch. 29 - Prob. 5MCCh. 29 - Prob. 1FIBCh. 29 - Prob. 2FIBCh. 29 - Feeding levels within ecosystems are also called...Ch. 29 - Prob. 4FIBCh. 29 - Prob. 5FIBCh. 29 - Prob. 6FIBCh. 29 - Prob. 7FIBCh. 29 - Prob. 1RQCh. 29 - Prob. 2RQCh. 29 - Define net primary production. Would you predict...Ch. 29 - Prob. 4RQCh. 29 - How do food chains and food webs differ? Which is...Ch. 29 - Prob. 6RQCh. 29 - Trace the movement of carbon from one of its...Ch. 29 - Prob. 8RQCh. 29 - Prob. 9RQCh. 29 - Prob. 1ACCh. 29 - Discuss the contribution of human population...
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- Describe the flow of nutrients in an ecosystemarrow_forwarda) Describe the relative numbers of producers, primary consumers, secondary consumers, and tertiary consumers expected in an ecosystem based on the food chain depicted below. b) Describe the shape that this pyramid of numbers would take. algae insect larvae yellow perch northern pike human c) If you were to include decomposers in the food chain above, where would you place them? Explain your answer.arrow_forwardWhat would happen to an ecosystem if all its decomposers and detritus feeders were eliminated or all its producers were eliminated?arrow_forward
- List the different types of consumers that may be presentin an ecosystem.arrow_forwardWhich 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_forwardIn the trophic structure, autotrophs are living organisms that: Are at the top of the chain, referred to as tertiary producers. Photosynthetic organisms that produce their own energy Organisms that receive their energy by consuming producers such as plants Help to decompose the remains of dead organismsarrow_forward
- Trophic levels Part A) In food chains and webs, what trophic level must you have more of than others. Part B) Each trophic level has how much LESS energy? Part C) Can an organism fill more than one trophic level? Explain your answer.arrow_forwardWhat are some advantages of being part of a food web rather than a food chain?arrow_forwardGive a) 3 examples of biotic componentsb) 7 examples of abiotic componentsarrow_forward
- 56) 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_forwardHow much energy is passed from one trophic level to the next? Explain why.arrow_forwarda) 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.arrow_forward
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