Biology: Life on Earth (11th Edition)
11th Edition
ISBN: 9780134168296
Author: Gerald Audesirk, Teresa Audesirk, Bruce E. Byers
Publisher: PEARSON
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Textbook Question
Chapter 29, Problem 5RQ
How do food chains and food webs differ? Which is the more accurate representation of feeding relationships in ecosystems?
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Chapter 29 Solutions
Biology: Life on Earth (11th Edition)
Ch. 29 -
1. Which trophic level(s) must be present to...Ch. 29 - Prob. 2MCCh. 29 - Denitrifying bacteria convert ammonia to nitrate...Ch. 29 -
4. Net primary production per unit area is likely...Ch. 29 - The effect of CO2 emissions from burning fossil...Ch. 29 -
1. Nearly all life gets its energy from _______...Ch. 29 -
2. Photosynthetic organisms are called either...Ch. 29 -
3. Feeding levels within ecosystems are also...Ch. 29 - In general, only about ______ percent of the...Ch. 29 - Prob. 5FTB
Ch. 29 -
6. During the nitrogen cycle, nitrogen gas is...Ch. 29 - Prob. 7FTBCh. 29 - Prob. 1RQCh. 29 -
2. What is a producer? What trophic level does it...Ch. 29 - 3. Define net primary production. Would you...Ch. 29 - Name the first three trophic levels. Among the...Ch. 29 - How do food chains and food webs differ? Which is...Ch. 29 - Define detritivore and decomposer and explain...Ch. 29 -
7. Trace the movement of carbon from one of its...Ch. 29 - Prob. 8RQCh. 29 - Trace a pathway of a phosphorus molecule from a...Ch. 29 -
1. Humans are omnivores who can feed on several...Ch. 29 - Discuss the contribution of human population...
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- How are the heterotrophic beings divided in the ecological study of food interactions?arrow_forwardWhat are some advantages of being part of a food web rather trhan a food chain?arrow_forwardDesign a logical food-web model of the living things in a typical deciduous forest. Producers should form the bottom of the web, with primary consumers and secondary consumers in the middle of the web, and tertiary consumers at the top of the web. Detritivores can be found throughout the web. Draw lines between the organisms that directly interact with each other. Organisms may have more than one line drawn from them or to them. In your model, include the sun, and illustrate how heat is lost as energy transfers from one trophic level to the next. Producers: maple tree dogwood tree spicebush (flowering shrub) Jack-in-the-pulpit (flower) Primary Consumers: spicebush swallowtail butterfly honeybee carpenter ant Secondary Consumers: woodpecker garter snake flycatcher (inset-eating bird) Tertiary Consumers: falcon screech owl bobcat Detritivores: bacteria earthworms flies fungiarrow_forward
- Based on the information below, list the following species in order of lowest to highest on the food chain: Mackerel, Dolphins, Birds, Krill. (Hint: If two species occupy the same level, they would be located at an equal position in the food chain).arrow_forwardWhat is a food web? How does the amount of primary productivity influence the number of trophic levels in a food web as well as the number of species at the top? Explain the difference between top down and bottom up control in food webs.arrow_forwardConstruct your model of the food chain/web by moving and linking (using arrows leading from those that eat and those that are eaten) all 8 images of the different species (trophic components).arrow_forward
- Feeding levels within ecosystems are also called______. An illustration of these levels with only oneorganism at each level is called a(n)_______ . Feeding relationships are most accurately depicted as_________ .arrow_forwardCreate a simple food web illustration that represents a herd of cows in a farm. It should include the following: primary, secondary, tertiary consumer, predator, prey, competition, producer, consumer, decomposer, herbivore, omnivore, heterotroph, and autotropharrow_forwardIndentify the correct food web for each question. Which type of food web cycles materials and moves energy into and out of the community? Grazing Which type of food web is dominant in Central Park's forests and pond? Detrital Which food web includes humans? Grazingarrow_forward
- What limits the length of food chains? can choose more than one answer Group of answer choices The transfer of energy between links in the food chain. The energy supply from primary producers. The cycling of nutrients within an ecosystem. The evolution of defense mechanisms on prey.arrow_forwardWhich of the following is true of trophic relationships in an ecosystem? All energy in the food chain is ultimately transferred to top level carnivores Most of the useable energy transferred between trophic levels is maintained--very little is lost The trophic pyramid predicts that top level carnivores should have the least amount of biomass in an ecosystem Net productivity is typically a measure of over-all photosynthesis in an ecosystemarrow_forward“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 levelsarrow_forward
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