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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Chapter 54, Problem 3TYK
Summary Introduction
Introduction:
The Sun is the prime source of energy for all ecosystems, out of which approximately 1% of the energy is utilized by the plants for photosynthesis while the rest is either absorbed by water bodies, the atmosphere, or reflected back into space. Net primary productivity (NPP) is the chemical energy left after deducting the energy used by plants for respiration from GPP.
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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 reproduction
The total amount of energy taken up by producers through photosynthesis in an ecosystem is known as...?
Group of answer choices
a. evaporation
b. net primary production
c. standing crop
d. nutrient limitation
e. gross primary production
Therate of decomposition of leaf litter in woodlands can be strongly influencedby:a.moisture.b.nitrogen content.c.leaf toughness.d. allof the choices apply.e. noneof the choices apply
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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- Primary”succession is succession that:a.involves establishment of primary producers where there were none.b.leads to establishment of a climax community dominated by primaryproducers.c.occurs on newly exposed geologic substrates, not organic soil.d.occurs where organic soils have been exposed but not destroyed bydisturbance.e.occurs after fire or agricultural abandonment.arrow_forwardNetprimary productivity is the primary productivity of an ecosystem, aftersubtracting energy lost in:a.dead plant tissues.b.inedible plant tissues.c.respiration by primary producers.d.respiration by primary consumers.e.inefficiencies of photosynthesis.arrow_forwardThese are the common threats in grassland biomes EXCEPT a. Illegal hunting b. Production of invasive species c. Deforestation d. Overgrazing of animals What is the effect of impervious surface? a. Faster seeping of water to ground b. It can cause groundwater contamination. c. Infiltration process will easily take place. d. Difficulty on seeping water to the ground creating high urban runoff.arrow_forward
- Which of the following processes lead to desertification of land in semi-arid areas? A. excessive irrigation B. intense fertilization C. overgrazing D. property developmentarrow_forwardThis biome gets little rainfall and has a high rate of evaporation. a. Tropical forest b. Temperate grassland c. Temperate deciduous forest d. Desertarrow_forwardSecondary succession occurs more quickly than primary succession mainly because O a. disturbances in the community exposes more soil b. sunlight is more available C. improved soil is present from the start d. nitrogen-fixing bacteria are present e. rocky areas contain more mineralsarrow_forward
- Gross 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_forwardIn a desert environment, the amount of plant growth is controlled by the amount of precipitation. In this case, precipitation is a(n) ____. a. limiting factor b. succession c. K-selection factor d. carrying capacity e. overshootarrow_forward44. Which of the following successional species would be able to grow (like the Sudbury smelters in Ontario, Canada)? A. long-lived species (like sugar maples) B. mature species (like oak trees) C. pioneer species (like grasses) D. intermediate species (like pine trees) E. all of the above will be equally able to grow close to a point source of heavy metal pollutants the closest to a point source of heavy metal pollutionarrow_forward
- An oligotrophic ecosystem would be most likely to exist in a/ana. ocean b. high mountain lake c. tropical pond d. polluted riverarrow_forwardWith the help of a globe or map, name specific countries where the following biomes can be found: a. Temperate grassland b. Desert c. Tropical rain forest d. Temperate deciduous forest e. Taiga f. Tundraarrow_forwardMichael wants to build a new storage shed and is considering clearing some trees from his land to use as lumber. What justification best explains the ecological benefit of saving his trees? a Decreasing shade and windbreaks b Providing food for hundreds of species c Sequestering (storing) carbon d Aiding in discharge of aquiferarrow_forward
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