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Worksheets4311 Test 3 Review
Total questions: 18
Worksheet time: 9mins
What is a community?
An individual of a particular species
The ecosystem in which an organism lives
An association of interacting populations in a certain area
A group of organisms of the same species
If a keystone species is lost, then the entire community changes, True or False?
True
False
Which of these organisms is considered a pioneer species?
Shrubs
Lichens
Pine Tree
Oak Tree
Which of these best describes the Inhibition Model of succession?
Each stage of succession facilitates the existence of the next stage
The species present at any time during succession are the result of chance
Each stage of succession is more tolerant than the one before it
Each stage of succession is less fit than the one before it
In the Shannon-Wiener diversity function, what does ( H' ) represent?
Number of species in community
Evenness of the community
Proportion of total abundance
Shannon-Wiener index
If the number of species in a community were to increase, what would happen to the species diversity?
Increase
Decrease
Stay the same
A 10-fold decrease in area will result in....?
A 50% reduction in the number of species
A 100% increase in the number of species
No change in number of species
A decrease in the number of species, followed by a sharp increase
Which of these is not considered an insular habitat?
Island
Cave
Mountain Top
Mainland Forest
Which of these is not a potential reason as to why species diversity is higher in the tropics?
Tropic habitats are older, and more stable
Tropics have a higher amount of potential habitats
Tropics have lower levels of interspecific interactions between species
Tropics have more resources available
A niche is the sum of all parameters that enable an organism to live in its biotic and abiotic environments, True or False?
True
False
What type of organism would likely be found in the second trophic level?
Grass
Eagle
Frog
Caterpillar
Which of these is not indicative of a species being the most important in its community?
Species with highest biomass
Species with highest population
Species where energy accumulates
Species where nutrients accumulates
In the concepts of trophic structure and energy flow, energy moves the through the community in cycles and is retained, while nutrients are lost through heat, True or False?
True
False
Which of these is not a major factor affecting primary productivity?
Moisture
Elevation
Light
Nutrients
Which of these ecosystems has the highest Net Primary Production of all marine ecosystems, but an overall low global Net Primary Production due to low area covered?
Oceans
Swamp
Algal beds and reefs
Estuaries
Which of these methods of measuring primary production/productivity is able to show the difference between shade and non-shade adapted plants?
Gas Exchange Method
Respiration Chamber
Chlorophyll Method
Harvest Method
Which of the methods to measure secondary production involves food intake and analyzing stomach contents?
Gross energy input
Digestion/Assimilation
Respiration
None of these
In most systems, which group of organisms receive 50-99% of the energy from each trophic level?
Plants
Herbivores
Carnivores
Detritivores
