31-40 acadly questions Flashcards
where would you see secondary succession?
1. after a glacier melts
2. after a volcano erupts
3. after a forest fire
4. on sand dunes along lake Ontario
5. all these places
after a forest fire
The intermediate disturbance hypothesis argues that;
1. transitions between communities are narrow
2. the climax community is extremely predictable
3. periodic disturbances will promote higher biodiversity
4. biodiversity increases steadily during succession
periodic disturbances will promote higher biodiversity
In old-field succession, an intermediate stage would likely include,
1. hardwood trees such as oak and hickory
2. annual plants
3. grasses
4. pine trees and shrubs
pine trees and shrubs
In Gleason’s individualistic concept of succession, the following is true,
1. transitions between communities are narrow
2. the climax community is extremely predictable
3. species respond independently during succession
4. communities have coevolved as an integrated super-organism
species respond independently during succession
Daniel Simberloff tested the theory of island biogeography in what island system?
1. Forest patches in agricultural land
2. mountain tops in the Rockies
3. Mangrove stands in the Florida keys
4. California channel islands
5. All of the above
Mangrove stands in the Florida keys
When a forest gradually merges into a grassland over a wide area, the border between the two landscape patches is referred to as,
1. narrow border
2. convoluted border
3. perforated border
4. ecotone
5. corridor
ecotone
Which of the following ecosystem has the lowest net primary production?
1. coral reef
2. tropical forest
3. swamps
4. corn field
5. temperate forest
corn field
The process in which toxins or chemicals get concentrated in organisms at the top of the food chain is called,
1. Biointensification
2. Trophic cascade
3. Bioaccumulation
4. Predator absorption
Bioaccumulation
Carbon dioxide is removed from the atmosphere during the process of,
1. respiration
2. decomposition
3. photosynthesis
4. combustion
5. all of the above
photosynthesis
Which of the following forms the nitrogen can be assimilated by plants ?
1. Nitrates
2. Nitrogen gas
3. Ammonium
4. Amino Acids
5. DNA
Nitrates and ammonium
The process in which organic compounds such as nitrogen are transformed into inorganic forms is termed,
1. mineralization
2. immobilization
3. bioaccumulation
4. translocation
5. respiration
mineralization
approximately what proportion of plant biomass enters the detrital food chain?
1. 10%
2. 25%
3. 50%
4. 75%
5. 90%
90%
Approximately what percent of the water on earth is freshwater?
1. 1%
2. 2.5%
3. 10%
4. 25%
5. 50%
2.5%
Where are most of this freshwater found?
1. atmosphere
2. frozen in glaciers and ice
3. lakes such as the great lakes
4. under the earth’s surface in ground water
5. oceons
frozen glaciers and ice
In the hydrologic cycle, where does water turnover most quickly?
1. groundwater
2. glaciers and ice
3. ocean
4, Atmosphere
atmosphere
seasonal fluctuations in carbon dioxide concentrations are cuased by,
1. increased fossile fuel buring in winter
2. weathering of rock surfaces following seasonal rain events
3. summer melting of the permafrost
4. cycles of dormancy and photosynthesis in temperature vegetation
5. all of the above
cycles of dormancy and photosynthesis in temperature vegetation
Which of the following is NOT a greenhouse gas,
1. Carbon dioxide
2. Methane
3. Hydrogen gas
4. water vapor
hydrogen gas
What are Coleoptera?
1. gut bacteria
2. round worms
3. mosses
4. Beetles
5. A type of fungi
Beetles
An area is over 70% disturbed by human activity and has > 1500 plant species is identified as a,
1. Biodiversity hotspot
2. megadiverse region
3. super-species preserve
4. wildlife ecoregion
biodiversity hotspot
Since the start of the industrial revolution, where has excess CO2 accumulated?
1. In biomass of trees and other plants
2. Diffused into the oceans
3. In an unidentified sink
4. The atmosphere
5. All of the above
All of the above
Which of the following is NOT is a major component of the nitrogen cycle?
1. Decomposition
2. Mineralization
3. Assimilation by plants
4. Photosynthesis
5. Fixation by bacteria and cyanobacteria
photosynethesis
Which species went extinct about 11,000 years ago?
1. Passenger pigeon
2. Saber-toothed tiger
3. Tyrannosaurus rex
4. Dodo bird
5. Black-naped pheasant-pigeon
saber-toothed tiger
If a region has high gamma diversity, what else would most likely be true?
1. It would have a low beta diversity
2. most species would be found throughout the region
3. It would have a low conservation value
4. It would contain different habitat types and communities
It would contain different habitat types and communities
