Campbell Biology: Concepts & Connections, Books a la Carte Plus Mastering Biology with eText -- Access Card Package (8th Edition)
8th Edition
ISBN: 9780133909029
Author: Jane B. Reece, Martha R. Taylor, Eric J. Simon, Jean L. Dickey, Kelly A. Hogan
Publisher: PEARSON
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Chapter 37, Problem 5TYK
Summary Introduction
Introduction: The food chain is divided into each tropic level and the culmination of many food chains together forms the food web. Each tropic level has a set of organism that belongs to a particular group such as producers, herbivores carnivores and so on.
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Look at the food web above to answer the following questions.
1. Which organisms are the producers in this food web?
2. Which organism is an example of a primary consumer?
3. Which organism is an example of a tertiary consumer?
Assume the following strict trophic chain: mountain lions eat deer; deer eat black oak seedlings; lizards eat bugs, spiders eat bugs; bugs eat black oak seedlings.
Which of the following statements is true? (choose one)
A. The mountain lion is a tertiary consumer
B. The deer is a secondary consumer
C. The spiders are secondary consumers
D. The lizards are primary consumers
The loss of an apex consumer would impact which trophic level of a food web? a. primary producers b. primary consumers c. secondary consumers d. all of the above
Chapter 37 Solutions
Campbell Biology: Concepts & Connections, Books a la Carte Plus Mastering Biology with eText -- Access Card Package (8th Edition)
Ch. 37 - Fill in the blanks in the table below summarizing...Ch. 37 - Fill in the blanks in the table below summarizing...Ch. 37 - Which of the following groups is (are) absolutely...Ch. 37 - Prob. 4TYKCh. 37 - Prob. 5TYKCh. 37 - Prob. 6TYKCh. 37 - The open ocean and tropical rain forests...Ch. 37 - Prob. 8TYKCh. 37 - Prob. 9TYKCh. 37 - Prob. 10TYK
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- Organisms at the first trophic level ________. a. capture energy from a nonliving source b. are eaten by organisms at lower trophic levels c. are shown at the top of an energy pyramid d. are consumersarrow_forwardThe producer in an ocean grazing food web is usually a _____. a. plant b. animal c. fungi d. planktonarrow_forwardThe maximum growth rate characteristic of a species is called its _________. a. limit b. carrying capacity c. biotic potential d. exponential growth patternarrow_forward
- Of the following benefits, which one is the main potential benefit of water markets? Group of answer choices A. More water is available for lower-income households B. More water is available for agricultural uses C. Water is used for its most highly-valued purposes D.There will be no more water forgeryarrow_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_forwardWhich trophic level(s) must be present to sustain any ecosystem?a. producers onlyb. producers and consumersc. producers, detritivores, and decomposersd. producers, consumers, detritivores, and decomposersarrow_forward
- In the Chesapeake Bay estuary, the blue crab is an omnivore that eats eelgrass and other primary producers as well as clams. It is also a cannibal. In turn, the crabs are eaten by humans and by the endangered Kemp's Ridley sea turtle. 1) Based on the above information, describe the food web that includes the blue crab. Identify the trophic levels and the organisms that occupy each. Some organisms may occupy more than one trophic level. 2) Assuming that top-down control occurs in this system, describe what would happen to the abundance of eelgrass if humans stopped eating blue crab.arrow_forwardThis trophic level creates biomass from abiotic sources quaternary consumer primary consumer primary producer tertiary consumerarrow_forwardThe diagram below represents recycling of nutrients in a certain ecosystem. Sunlight. I Secondary Consumer Producer. Q. Dead organism III. II Mineral salts and hunts a.Name the trophic level represented by Q b.Name the process represented by: I II III c.Name the organism involved in process II d.What would happen within the ecosystem if all the secondary consumer were eliminated?arrow_forward
- 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?arrow_forwardIn the English Channel ecosystem, the number of primary producers is smaller than the number of primary consumers because________. a. the apex consumers have a low turnover rate b. the primary producers have a low turnover rate c. the primary producers have a high turnover rate d. the primary consumers have a high turnover ratearrow_forwardIncrease in concentration of the toxicant at successive trophic levels is known as what?arrow_forward
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