Interactions among individuals of the same species
What is community ecology?
Interactions among groups of individuals of different species
What is ecosystem ecology?
All biotic and abiotic aspects of an environment
Which of these represents the correct hierarchical order?
A) community, population, cell, organism, ecosystem B) organism, cell, community, ecosystem, population C) ecosystem, population, cell, organism, community D) cell, organism, population, community, ecosystem E) cell, organism, ecosystem, population, community
Wind may affect_____?
A)pollen dispersal B) patterns of plant growth C) rates of water loss D) nutrient availability E) all of these
What is a population?
A) a group of organisms of the same species isolated in space and time B) a group of organisms isolated in space and time C) a group of organisms of the same species isolated in space D) a group of organisms isolated in space E) all of the organisms of a species existing at a particular time
When students first enter a classroom where they are unfamiliar with others in the class, they tend to leave at least one chair between each other. What type of dispersion pattern does this illustrate?
A) random B) stochastic C) bunched D) uniform E) clumped
In the absence of limiting factors, a population's growth follows a(n) ______ model.
A) hypergeometric B) mathematical C) logistic D) geometric E) exponential
According to the logistic growth model, what happens to the growth rate of a population as the size of the population nears carrying capacity?
A) The growth rate increases. B) The growth rate abruptly drops to zero. C) The growth rate slows to zero. D) The growth rate slows but never reaches zero. E) The growth rate remains unchanged.
Which of these factors influences populations in a density-dependent manner?
A) food supply B) flood C) hurricane D) blizzard E) volcanic eruption
An unexpected freeze that kills a population of chipmunks is an example of ______.
A) a density-dependent factor B) a density-independent factor C) a natal effect D) an intrinsic factor E) an endogenous factor
What will be the approximate shape of the age-structure diagram of a rapidly increasing population?
A) an inverted pyramid B) a rectangle C) an hourglass D) a circle E) a pyramid
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