Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN: 9781305389892
Author: Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher: Cengage Learning
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Textbook Question
Chapter 54, Problem 2TYK
The total dry weight of plant material in a forest is a measure of the forest’s:
a. gross primary productivity.
b. net primary productivity.
c.
d. standing crop biomass.
e. ecological efficiency.
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Chapter 54 Solutions
Biology: The Dynamic Science (MindTap Course List)
Ch. 54.1 - In the generalized compartment model of...Ch. 54.1 - Prob. 2SBCh. 54.1 - Prob. 3SBCh. 54.2 - What is the difference between gross primary...Ch. 54.2 - What environmental factors influence rates of...Ch. 54.2 - Why is energy lost from an ecosystem at every...Ch. 54.2 - Prob. 4SBCh. 54.3 - Prob. 1SBCh. 54.3 - Prob. 2SBCh. 54.3 - Prob. 3SB
Ch. 54.3 - What is Earths main reservoir for phosphorus, and...Ch. 54.4 - Prob. 1SBCh. 54.4 - Prob. 2SBCh. 54.4 - Prob. 3SBCh. 54 - Prob. 1TYKCh. 54 - The total dry weight of plant material in a forest...Ch. 54 - Prob. 3TYKCh. 54 - Prob. 4TYKCh. 54 - Which process moves nutrients from the available...Ch. 54 - Which of the following materials has a sedimentary...Ch. 54 - Prob. 7TYKCh. 54 - Prob. 8TYKCh. 54 - The amount of energy available at the highest...Ch. 54 - Which of the following statements is supported by...Ch. 54 - Prob. 11TYKCh. 54 - Prob. 12TYKCh. 54 - Prob. 13TYKCh. 54 - Prob. 14TYKCh. 54 - Prob. 15TYKCh. 54 - Prob. 16TYKCh. 54 - Prob. 1ITD
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- Gross primary productivity refers to the total a. energy used by the heterotrophs of the ecosystem in a given period of time b. energy captured initially by the producers c. quantity of solar energy reaching a given area of the ecosystem d. quantity of solar energy available to the ecosystem in a given period of time e. energy used by the producers for their growth and reproductionarrow_forwardInHubbard Brook Experimental Forest, the largest “standing stock” ofenergy is represented by biomass of:a.living plant tissues.b.dead plant tissues.c.invertebrate herbivores.d.vertebrate herbivores.e.vertebrate carnivores.arrow_forwardGross primary productivity refers to the total a. energy used by the heterotrophs of the ecosystem in a given period of time energy captured initially by the producers OC.quantity of solar energy reaching a given area of the ecosystem O d.quantity of solar energy available to the ecosystem in a given period of time e. energy used by the producers for their growth and reproduction b.arrow_forward
- Chemical fertilizers: a. supplement carbon fixation by crops. b. cause eutrophication. c. provide additional nitrogen for crops. d. provide additional phosphorous for crops. e. Only b. c. and d.arrow_forwardIn an inverted trophic pyramid, biomass is present in the secondary carnivores than in the primary producers. Compared to terrestrial systems, aquatic systems are likely to feature inverted pyramids. A. more; much more B. more; about as C. more; much less D. less; much more E. less; much lessarrow_forwardWhich of the following would be a reason why incumbents may have an absolute cost advantage over entrants? a. Incumbents may have plants in the most desirable locations. O b. Incumbents' output may be greater. O c. Incumbents may be able to offer lower prices than entrants. O d. Entrants face an opportunity cost of using scarce inputs, but incumbents do not.arrow_forward
- The total amount of living tissue within a given trophic level is called the: O A. Biomass O B. Energy mass C. Organic mass O D. Trophic massarrow_forwardIntroduction: from where are you, which town and country? a, Give a short description of the vegetation in your region and explain the current way of veld utilization in that region. b, which negative or positive aspects con you identify with the current way of utilization? emphasize any negative and /or positive aspects ( for instance continuous vs rotational grazing) c, Give possible (scientific) solutions for the identified problems for example: c1, the advantages of keeping correct animal numbers. c2, An example of a proper rotational grazing c3, ways in which degraded areas (overgrazed, bare areas, eroded, bush encroached) can be treated (or which actions can be implemented) to improve the veld condition.arrow_forwardWhich of the following statements BEST describes energy transfer in an ecosystem? A. If the primary producer has 175,000 kcal available, the secondary consumer will receive 17,500 kcal from the primary consumer. B. If the primary consumer has 175,000 kcal available, the secondary consumer will receive 17,500 kcal from the primary consumer. C. If the primary consumer has 175,000 kcal available, the tertiary consumer will receive 175 kcal from the secondary consumer. D. If the primary producer has 175,000 kcal available, the tertiary consumer will receive 17,500 kcal from the secondary consumer.arrow_forward
- As energy is transferred from one trophic level to the next, substantial amounts of energy are lost to/asa. undigestible biomass.b. heat.c. metabolism.d. All of the above.arrow_forwardPlant growth is most likely to be limited by the available supply of usable: a. nitrogenb. carbonc. oxygend. phosphorusarrow_forwardA group of researchers are assessing energy availability in a terrestrial ecosystem. The image shows the food web for this ecosystem. They set up three plots and assess the biomass of producers, primary consumers, and secondary consumers. Rabbits and grasshoppers feed on ground cover plants that grow on the forest floor. Plot 1 is composed of mature hardwood trees, and only 25% of the sunlight reaches the shrubs and grasses compared to plots 2 and 3, which have fewer trees and allow more sunlight to reach the forest floor. Based on the food web shown here, which of the following best describes how the reduction in sunlight to the forest floor would impact the number of primary consumers (squirrel, grasshopper, rabbit, and deer) in plot 1 compared to the other plots? A - Plot 1 will show an increase in deer only because they feed on trees. B - Plot 1 will show a decrease in squirrels and rabbits, while deer and grasshoppers will increase. C - Plot 1 will show a decrease in rabbits and…arrow_forward
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