Primary producers Tertiary consumers Secondary consumers Primary consumers and decomposers Which of the following statements is true for different trophic levels in ecosystems? Between 80% and 90% of the energy is lost between most trophic levels. Primary consumers consume less biomass than secondary consumers. Productivity increases with each trophic level. Between 10% and 20% of the energy is lost between most trophic levels. (g/m²/year) 30 200 1000

Primary producers Tertiary consumers Secondary consumers Primary consumers and decomposers Which of the following statements is true for different trophic levels in ecosystems? Between 80% and 90% of the energy is lost between most trophic levels. Primary consumers consume less biomass than secondary consumers. Productivity increases with each trophic level. Between 10% and 20% of the energy is lost between most trophic levels. (g/m²/year) 30 200 1000

Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter46: Ecosystems

Section: Chapter Questions

Problem 10RQ: The loss of an apex consumer would impact which trophic level of a food web? primary producers...

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Within an ecosystem, the total amount of energy produced initially by primary producers will be _ the total amount of energy lost as heat and respiration across all trophic levels, including producers, consumers, and decomposers. more than unequal to equivalent to less than
ctional What proportion of energy stored at one trophic level ends up being LOST as it moves to the next trophic level? O 10% O 25% O 50% O 75% O 90%
What percent of the energy stored at one trophic level is stored at the next trophic level? О 10% О 30% 50% O 90%
What proportion of energy stored at one trophic level ends up being LOST as it moves to the next trophic level? 10% O 25% O 50% O 75% O 90% o O O O
Which trophic level in an aquatic ecosystem would contain the greatest amount of usable energy? Primary consumers located 150 meters below sea level. Primary producers located 80 meters below sea level. Primary producers located 45 meters below sea level. Primary consumers located 40 meters below sea level.
The direction of the arrows in a trophic chain (as the one in the figure below) represents... A E O B) direction of movement of matter O Both B and C O A, B, and C O A) direction of consumption, from higher level consumer to lower level consumer O C) direction of movement of energy O Both A and C
A given ecosystem has the following amounts of energy available at each trophic level: Primary producers: 4,000 gC/m2/day; Primary consumers: 480 gC/m2/day; Secondary consumers: 72 gC/m2/day; Tertiary consumers: 24 gC/m2/day. Does this ecosystem follow Lindeman's Law for ecological efficiency? No, the average efficiency is 20% O Yes, the average efficiency is 10% O No, the average efficiency is 10% O Yes, the average efficiency is 20%
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Only about 10 percent of the energy from each level of an energy pyramid is available to the trophic level above it. (The rest is used to power life processes or is lost as heat .) If the primary producers have ,000 units of stored energy , how much energy would you expect to be transfered to first-level , second level , and third -level consumers ? Fill in the boxes with your answers.
A Food Web om Eage Pythan Wolf Rat Dragonfly Thrush Frog Butterfly Fruit Fly Grasshopper Mangoes Corn A Flowering Plant Lavenders 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?
Many people who want to reduce their ecological footprinthave focused on how much energy is expended (and howmany climate-warming greenhouse gases are emitted) intransporting food from its place of production to its place ofsale. The typical grocery store item is shipped by truck, air,and/or sea for many hundreds of miles before reaching theshelves, and this transport consumes oil. This concern over“food-miles” has helped drive the “locavore” movement tobuy and eat locally sourced food.However, food’s transport from producer to retailer, asmeasured by food-miles, is just one source of carbon emissionsin the overall process of producing and delivering food. In2008, environmental scientists Christopher Weber and H. ScottMathews conducted a thorough life-cycle analysis (p. 400) ofU.S. food production and delivery. By filling in the table below,you will get a better idea of how our dietary choices contribute toclimate change. After measuring mass, energy content, and dollar valuefor each…
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