10. A biological community's productivity is a measure of A. its number of species. B. the number of individuals in the community. C. available solar energy that can be converted to biomass. D. the amount of biomass produced in the community. E. All of these are combined in measuring a community's productivity l oft

10. A biological community's productivity is a measure of A. its number of species. B. the number of individuals in the community. C. available solar energy that can be converted to biomass. D. the amount of biomass produced in the community. E. All of these are combined in measuring a community's productivity l oft

Biology (MindTap Course List)

11th Edition

ISBN:9781337392938

Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Publisher:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Chapter55: Ecosystems And The Biosphere

Section: Chapter Questions

Problem 3TYU: The quantitative estimate of the total amount of living material is called (a) biomass (b) energy...

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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 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.
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
Netprimary 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.
The quantitative estimate of the total amount of living material is called (a) biomass (b) energy flow (c) gross primary productivity (d) plant respiration (e) net primary productivity
A limiting resource does all the following except that it (a) tends to restrict the ecological niche of a species (b) is in short supply relative to a species need for it (c) limits the presence of a species in a given community (d) results in an intermediate disturbance (e) may be limiting for only part of an organisms life cycle
The amount of energy available at the highest trophic level in an ecosystem is determined by: a. only the gross primary productivity of the ecosystem. b. only the net primary productivity of the ecosystem. c. the gross primary productivity and the standing crop biomass. d. the net primary productivity and the ecological efficiencies of herbivores. e. the net primary productivity and the ecological efficiencies at all lower trophic levels.
a. One 6 Several 6. The simplest grouping of more than one kind of organism in the biosphere is a. An ecosystem b. A population OA community d. A species 7. The lowest level of environmental complexity that includes living and factors in the ecosystem. 8. An example of producers is Grass 9. Sunlight is the original source of allProducer in most ecosystems. food supply from inorganic 10. A producer uses energy to produce its compounds. 11. A heterotroph is an organism that make its own food. Can b. Cannot
4. Which is the best description of sustainable development? A. using renewable resources at a rate faster than they can be replaced B. using resources without destroying or depleting them, while providing for human needs C. using renewable resources to satisfy human needs, while ignoring the needs of other living organisms D. using nonrenewable resources without care for their consumption
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
3. Which trophic level converts energy into biomass with the highest food-chain efficiency? A. the fifth trophic level (quaternary consumers) B. the fourth trophic level (tertiary consumers) C. the third trophic level (secondary consumers) D. the second trophic level (primary consumers) E. the first trophic level (producers)
19. A biological community's productivity is a measure of I. its number of species II. the number of individuals in the community III. the amount of biomass produced in the community A) I only B) II only C) III only D) II and III only
3. An ecologist studying the trophic structure of a lake constructed the pyramid of biomass below. He is puzzled because the bottom of the pyramid (the producer biomass) is smaller than the next level (the primary consumer biomass). Biomass Top carnivores 1g/m3 Carnivores 12 g/m3 Herbivores 25 g/m3 Producers 10 g/m3