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Ecology Review
Ch.51-54
27
Biology
12th Grade
04/20/2016

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Term
Animal communication involves what type of sensory information?
Definition
Visual, auditory, and chemical
Term
How do animals use pheromones to communicate?
Definition
Pheromones are a chemical substance that are produced and released into the environment by an animal, especially a mammal or an insect, affecting the behavior or physiology of others of its species.
Term
Operant Conditioning
Definition
type of learning where behavior is controlled by consequences
Term
Agonistic behaviour
Definition
social behaviour related to fighting; includes threats, displays, retreats, placation, and conciliation.
Term
Innate behavior
Definition
do not have to be learned or practiced; also called instinctive behaviors.
Term
Altruistic behavior
Definition
behavior by an individual that increases the fitness of another individual while decreasing the fitness of the actor.
Term
Imprinting
Definition
(of a young animal) come to recognize (another animal, person, or thing) as a parent or other object of habitual trust.
Term
Which of the following is true about imprinting?
Definition
It may be triggered by visual or chemical stimuli.
Term
Which of the following is true of innate behaviors?
Definition
Innate behaviors are expressed in most individuals in a population across a wide range of environmental conditions.
Term
Levels of ecological organization
Definition
Individual -> Population -> Community -> Ecosystem -> Biosphere
Term
Convergent evolution
Definition
process by which unrelated or distantly related organisms evolve similar body forms, coloration, organs, and adaptations.
Term
The growing season is shortest in which biome?
Definition
Tundra
Term
Why are there no trees in the Tundra ?
Definition
Not only is the ground too hard and frozen to support such huge organisms but there are not enough sunny days for photosynthesis to occur
Term
Biological diversity
Definition
global variety of species and ecosystems and the ecological processes of which they are part, covering three components: genetic, species and ecosystem diversity.
Term
Uniform Dispersion
Definition
individuals in a population are evenly spaced
Term
Carrying Capacity
Definition
maximum population size of the species that the environment can sustain indefinitely, given the food, habitat, water, and other necessities available in the environment.
Term
Characteristics of K-selection:
Definition
Stable environment, density dependent interactions, large sized organisms, energy used to make each individual is high, few offspring, late maturity, long life expectancy, individuals can reproduce more than once in their lifetime, most individuals live to near the maximum life span
Term
In which of the following habitats would you expect to find the largest number of K-selected individuals?
Definition
the flora and fauna of a coral reef in the Caribbean
Term
Which of the following characterizes relatively K-selected populations?
Definition
offspring with good chances of survival
Term
Why do populations grow more slowly as they approach their carrying capacity?
Definition
Density-dependent factors lead to fewer births and increased mortality.
Term
Population ecologists are primarily interested in
Definition
understanding how biotic and abiotic factors influence the density, distribution, size, and age structure of populations.
Term
Survivorship curve
Definition
graph showing the number or proportion of individuals surviving to each age for a given species or group
Term
Competitive Exclusion Principle
Definition
proposition that states that two species competing for the same resource cannot coexist at constant population values, if other ecological factors remain constant.
Term
Resource Partitioning
Definition
species divide a niche to avoid competition for resources; sometimes the competition is between species, called interspecific competition, and sometimes it's between individuals of the same species, or intraspecific competition.
Term
Batesian Mimicry
Definition
harmless species has evolved to imitate the warning signals of a harmful species directed at a predator of them both; The monarch butterfly is poisonous when eaten, and the viceroy butterfly, the mimic, is not.
Term
Trophic Levels
Definition
Decomposers (mushrooms, worms) -> Primary Producers (plants) -> primary consumers (herbivores) -> secondary consumers -> (primary carnivores/omnivores) -> tertiary consumers (top carnivores)
Term
What happens to energy as it moves up the food chain ?
Definition
Most of the energy is lost (almost 90% of the energy is lost)
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