Biology Biology Practice Problems Solutions Library

Ecosystems Solutions Library

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32 solutions

Ecosystems

Q. Define matter and energy, then the two types of energy.

Solved • Jul 31, 2018

Ecosystems

Q. Most commercial fertilizers supply nitrogen both as ammonia or ammonium and as nitrate. Yet, plants are much more efficient at taking up nitrate in...

Solved • Jul 30, 2018

Ecosystems

Q. Which statement best describes the role of soil bacteria in nitrogen cycling?A. They convert inorganic nitrogen to organic nitrogen.B. They convert...

Solved • Jul 30, 2018

Ecosystems

Q. How does energy from the Sun drive the movement of water from the oceans to the continents and back to the oceans again?

Solved • Jul 24, 2018

Ecosystems

Q. Which trophic level is most at risk from chemicals like mercury and DDT?A. Tertiary consumersB. Primary producersC. Primary consumersD. Secondary c...

Solved • Jul 17, 2018

Ecosystems

Q. Define and give examples of the 5 levels of ecology (organisms, population, community, ecosystem, global).

Solved • Jul 16, 2018

Ecosystems

Q. Give (5) examples of potential sources for groundwater contamination.

Solved • Jun 28, 2018

Ecosystems

Q. List and briefly describe the (2) basic types of aquifers. 

Solved • Jun 27, 2018

Ecosystems

Q. Describe the differences between acclimation and adaptation. Which of the above can an individual organism do? Do species differ in their ability t...

Solved • May 18, 2018

Ecosystems

Q. What are some of the reasons populations might have different allele frequencies than other nearby populations? What factors determine when allele ...

Solved • May 18, 2018

Ecosystems

Q. Account for the presence of microorganisms in natural bodies of water. What is their function? Explain.

Solved • May 8, 2018

Ecosystems

Q. If you applied a fungicide to a cornfield, what would you expect to happen to the rate of decomposition and net ecosystem production (NEP)?a. Both ...

Solved • Nov 21, 2017

Ecosystems

Q. Which of the following has the greatest effect on the rate of chemical cycling in an ecosystem?a. the rate of decomposition in the ecosystemb. the ...

Solved • Nov 21, 2017

Ecosystems

Q. The discipline that applies ecological principles to returning degraded ecosystems to a more natural state is known asa. restoration ecology.b. the...

Solved • Nov 21, 2017

Ecosystems

Q. Which of these ecosystems has the lowest net primary production per square meter? a. a salt marsh b. an open ocean c. a coral reef d. a tropica...

Solved • Nov 21, 2017

Ecosystems

Q. Which of the following organisms is incorrectly paired with its trophic level? a. cyanobacterium—primary producer b. grasshopper—primary consumer...

Solved • Nov 21, 2017

Ecosystems

Q. The first step in ecosystem restoration is to ________.a. restore the physical structureb. restore native species that have been extirpated due to ...

Solved • Nov 21, 2017

Ecosystems

Q. Which of the following locations are major reservoirs for carbon in the carbon cycle? a. the ocean, atmosphere, and fossilized and live plant and ...

Solved • Nov 21, 2017

Ecosystems

Q. Consider the global water cycle depicted in the figure. Where is the greatest flux of water from one reserve to another?a. from precipitation to th...

Solved • Nov 21, 2017

Ecosystems

Q. Which trophic level is most vulnerable to extinction? a. producer level b. primary consumer level c. secondary consumer level d. tertiary consu...

Solved • Nov 21, 2017

Ecosystems

Q. For most terrestrial ecosystems, pyramids composed of species abundances, biomass, and energy are similar in that they have a broad base and a narr...

Solved • Nov 21, 2017

Ecosystems

Q. How does inefficient transfer of energy among trophic levels result in the typically high endangerment status of many top-level predators? a. Top-...

Solved • Nov 21, 2017

Ecosystems

Q. Which category in the figure makes available the highest productivity per square meter?a. tropical wet forestb. open oceanc. algal beds and reefsd....

Solved • Nov 21, 2017

Ecosystems

Q. Which habitat type in the figure makes available the most new tissue to consumers?a. tropical wet forestb. open oceanc. algal beds and reefsd. wetl...

Solved • Nov 21, 2017

Ecosystems

Q. Which habitat types in the figure cover the largest area?a. tropical wet forestb. rock, sand, icec. algal beds and reefsd. wetlands plus the ocean ...

Solved • Nov 21, 2017

Ecosystems

Q. Matter may be gained by, or lost from, ecosystems. How does this occur?a. Chemoautotrophic organisms can convert matter to energyb. Matter can move...

Solved • Nov 21, 2017

Ecosystems

Q. In the figure, what could the jagged arrow leaving microorganisms and other detritivores represent? a. organic compounds broken down by bacteria ...

Solved • Nov 21, 2017

Ecosystems

Q. If the sun were to suddenly stop providing energy to Earth, most ecosystems would eventually vanish. Which of the following ecosystems would likely...

Solved • Nov 21, 2017

Ecosystems

Q. In general, the total biomass in a terrestrial ecosystem will be greatest for which trophic level? a. tertiary consumers b. secondary consumers ...

Solved • Aug 17, 2017

Ecosystems

Q. The decomposers in an ecosystem are _____. a. prokaryotes. b. plants. c. insects. d. fungi. e. both A and D.

Solved • Aug 17, 2017

Ecosystems

Q. Consider a field plot containing 200 kg of plant material. Approximately how many kg of carnivore production can be supported? a. 200  b. 100 c....

Solved • Aug 17, 2017

Ecosystems

Q. An ecosystem would include all of the following except: a.  A communityb.  A biospherec.  Populationsd.  Organismse.  None of these are correct

Solved • Aug 1, 2017