Concept explainers
Considering the second law of
To examine: Whether the primary producers or the secondary producers would have greater or lesser biomass production in an ecosystem, considering the 2nd law of thermodynamics.
Introduction: The second law of thermodynamics states that “no energy transfer is 100% efficient; some energy is dispersed as heat”. In a living system such as in a cell, the second law of thermodynamics states that the capture and storage or use of energy is never 100% by the living cells. The energy is lost as disordered and metabolic heat energy.
Explanation of Solution
As per the 2nd law of thermodynamics, the useable energy decreases all the time. Only 10% of the original energy is useable for the successive trophic level, whereas 90% is lost in the form of heat. When the secondary producers or the primary consumers eat a primary producer (grass or plants), it is not all of the energy that is stored in the plant gets converted to useable energy. This is because during energy transfer, the energy is always lost due to entropy.
Therefore, it suggests that for maintaining its life functions, an organism must use much energy. The lost energy in the form of heat by an organism is no longer useable for them as well as for other organisms.
In the case of secondary producers, the biomass will always be less when compared to the primary producers because of 10% rule, and the successive energy transfer will always be less than that of the primary producers.
The typical biomass of the primary producers will always be greater than that of the secondary producers.
Want to see more full solutions like this?
Chapter 55 Solutions
IA MODIFIED MASTERING BIOLOGY WITH E TEX
Additional Science Textbook Solutions
Genetic Analysis: An Integrated Approach (3rd Edition)
Physics for Scientists and Engineers: A Strategic Approach, Vol. 1 (Chs 1-21) (4th Edition)
Human Anatomy & Physiology (2nd Edition)
Biology: Life on Earth (11th Edition)
Human Biology: Concepts and Current Issues (8th Edition)
Introductory Chemistry (6th Edition)
- In relation to energy transfer in ecosystem,explain the statement"10kg of deer's meat is equivalent to 1kg of lion's flesh".arrow_forwardFigure 6.8 Look at each of the processes shown, and decide if it is endergonic or exergonic. In each case, does enthalpy increase or decrease, and does entropy increase or decrease? Figure 6.8 This figure shows some examples of endergonic pr sses (ones that require energy) and exergone processes (ones that release energy). These include (a) a compost ple decomposing (b) a chick developing from a fertilized egg (c) sand art destruction, and (d) a ball rolling down a hill (erods a mor cation of work by Natale Maynor, credit b. modification of work by USDA credite modification of work by Alb modification of work by Harry Malsch)arrow_forwardA characteristic of the open-loop system is that it does not use feedback to determine if its output has achieved the desired goal of the input. This means that the system does not observe the output of the processes that it is controlling. Closed-loop systems employ feedback and a reference of correctness. Deviations from the norm are detected and corrections made in order to maintain a desired output. 3) The image shown above is the Carbon cycle. What kind of system is the Carbon cycle? A) open-loop system B) closed-loop system C) unregulated system D) unchecked feedback system not gradedarrow_forward
- List two ways in which you could apply these concepts : (a) “as energy flows through ecosystems in food chains and webs, the amount of chemical energy available to organisms at each succeeding feeding level decreases” and (b) “matter, in the form of nutrients, cycles within and among ecosystems and the biosphere, and human activities are altering these chemical cycles.” to making your lifestyle more environmentally sustainable.arrow_forwardExplain how energy flow supports the second law of thermodynamics in an ecosystem.arrow_forwardOpponents of alternative and renewable energy technologies argue that such technologies are expensive and contain many hidden costs. Opponents of fossil fuels and non-renewable energy technologies argue that we don't account for the hidden environmental and health costs of these technologies, which makes non-renewables (primarily fossil fuels) seem cheaper. Explore this debate by doing the following: Go to the website page: https://www.aei.org/articles/the-trouble-with-renewable-energy/ to read an article stating that renewable energy technologies may not fulfill their promise. Notice the date of the article and reflect on any change in our society's perception on this subject. Also note the author. I recommend you always do a bit of research about an article's author, because it is important to understand an author's frame of reference. Now go to the Clean Energy website to read an article about renewable energy technology:…arrow_forward
- In the context of decomposition, we can calculate a k-value. This tells us the amount of time until no substrate remains during decomposition the rate at which energy is cycled in an ecosystem the rate at which the decomposition of a substrate takes place () the rate at which decomposer populations grow the remaining mass of a substrate after a decomposition experimentarrow_forwardHow can estimation of energy flow from plant to herbivore be correlated to laws of thermodynamics?arrow_forwardaccording to the chart pie 1)what percentage of energy is produced by fossil fuel? 2)what percentage of energy is produced by energy technologies? 3) how much energy is produced by all alternative energy combined? U.S. energy consumption by energy source, 2017 Total 97.7 quadrillion British thermal units (Btu) Total = 11.0 quadrillion Btu geothermal 2 % solar 6% petroleum 37% - wind 21% biomass waste 4% biofuels 21% renewable energy 11% nuclear electric power 9% biomass 45% natural gas 29% wood 19% coal 14% hydroelectric 25%arrow_forward
- please see attachedarrow_forward(3) Based upon what we have read, all of the following are potential negative effects of our concentration on growing biofuels (e.g. corn for ethanol production) except: (a) Disappearing Brazilian rainforest used for growing corn (b) Destruction of natural petroleum reservoirs beneath the Alaskan National Wildlife Reserve (c) Decreased resources to fight famine in Africa and other impoverished areas in the world (d) National focus to find or develop practical resources for future energy productionarrow_forwardIn ecological systems, a rough rule of thumb is that when energyis transferred from plants to plant-eaters or from preyto predator, the efficiency is only about 10% (p. 72). Muchof this inefficiency is a consequence of the second law ofthermodynamics. Another way to think of this is that eating 1calorie of material from an animal is the ecological equivalentof eating 10 calories of plant material.Humans are considered omnivores because we can eat bothplants and animals. Our food choices have significant ecologicalimpacts. With this in mind, calculate the ecologicalenergy requirements for four different diets, each of whichprovides a total of 2000 dietary calories per day. Describe some challenges of providing food for thegrowing human population, especially as people in manypoorer nations develop a taste for an American-style dietrich in animal protein and fat.arrow_forward
- Biology (MindTap Course List)BiologyISBN:9781337392938Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. BergPublisher:Cengage Learning