Biology: Life on Earth with Physiology (11th Edition)
11th Edition
ISBN: 9780133923001
Author: Gerald Audesirk, Teresa Audesirk, Bruce E. Byers
Publisher: PEARSON
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Chapter 29.2, Problem 1CSC
Summary Introduction
To determine:
The process of nutrients recycling to future generations of living things.
Introduction:
Energy and nutrients are the two essential components of the ecosystem that are required by all living organisms. Energy and nutrients enter the ecosystem through photosynthesis and pass through various trophic levels including the complex food web and the nonliving factors of the environment. Nutrients are required by all life forms for growth, reproduction, and maintaining and repairing tissues. Nutrients flow through the ecosystem with the help of biogeochemical cycle.
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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.
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Chapter 29 Solutions
Biology: Life on Earth with Physiology (11th Edition)
Ch. 29.1 - explain why nutrients cycle within and between...Ch. 29.2 - Prob. 1CSCCh. 29.2 - Prob. 1CYLCh. 29.2 - Prob. 1TCCh. 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 - explain why nutrients cycle within and among...Ch. 29.3 - Prob. 1ETCh. 29.3 - Prob. 1TC
Ch. 29.3 - describe the hydrologic, nitrogen, carbon, and...Ch. 29.4 - Prob. 1CSRCh. 29.4 - Prob. 1CTCh. 29.4 - Prob. 1CYLCh. 29.4 - Prob. 1HYEWCh. 29.4 - Prob. 1TCCh. 29.4 - Prob. 2CYLCh. 29.4 - People tend to be much more attuned to whats...Ch. 29.4 - Prob. 3CYLCh. 29 - Prob. 1ACCh. 29 - Prob. 1FIBCh. 29 - Prob. 1MCCh. 29 - Prob. 1RQCh. 29 - Discuss the contribution of human population...Ch. 29 - Prob. 2FIBCh. 29 - Which of the following is not a major reservoir in...Ch. 29 - Prob. 2RQCh. 29 - Feeding levels within ecosystems are also called...Ch. 29 - Prob. 3MCCh. 29 - Define net primary production. Would you predict...Ch. 29 - Prob. 4FIBCh. 29 - Net primary production per unit area is likely to...Ch. 29 - Prob. 4RQCh. 29 - Prob. 5FIBCh. 29 - Prob. 5MCCh. 29 - How do food chains and food webs differ? Which is...Ch. 29 - Prob. 6FIBCh. 29 - Prob. 6RQCh. 29 - Prob. 7FIBCh. 29 - Trace the movement of carbon from one of its...Ch. 29 - Prob. 8RQCh. 29 - Prob. 9RQ
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- The energy flow in the ecosystem is important to maintain an ecological balance. In this context, answer the following: (i) Explain why the flow of energy at different levels in an ecosystem is unidirectional and non-cyclic? (ii) Why is the number of trophic levels in an ecosystem limited?arrow_forwardUsing the diagram of a food pyramid for reference, estimate the following: a. How many kilograms of plankton does it take to produce 25 kilograms of invertebrates? _____ kilograms of plankton b. How many kilograms of invertebrates does it take to produce 5 kilograms of fish? _____ kilograms of invertebratesarrow_forwardWhich of the following ultimately feeds at every trophic level? Producer Primary consumer Secondary consumer Tertiary consumer Decomposers/Detritivoresarrow_forward
- When hunting disrupts the balance in the food chain by removing all owls, there will be no predators on snakes, leading to their increase in numbers. Considering the scenario where the number of lost owls (4) is replaced by snakes, compute for energy units following in completing the table below. Trophic Levels No. Individuals in Each Trophic Level No. of Units Received from Trophic Level Above No. Units Used / Individual (Resp) No. Units Used in Trophic Level No. Units Remaining & Passed on to Next Trophic Level Mean No. Units Available per Individual in Trophic Level SUN +E = 6 1) Plants 30 2 2) Grasshopper 19 2 3) Frog 12 2 4) Snake 8 + 4 = 12 2 5) Owl 0 2arrow_forwardAvailability of energy is less for entities at higher trophic levels.Why?arrow_forwardAvailability of energy is less for entities at higher trophic levels. Why?arrow_forward
- In 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_forwardThe position of an organism within a food web is described by its trophic level. When modeling energy dynamics of a food web, losses of energy at these different levels produces a pyramid-shaped distribution of available energy. True or False?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_forward
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