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Terms in this set (20)
A biological ________________ is a population of different species living close enough together for potential interaction.
What is the difference between interspecific interactions and interspecific competition?
interaction is just the relationship between the two species. Competition is they compete for the same limited resource
List, describe, and give examples of the five times of interspecific interactions.
1.competition- both lose from it. ex: squirrels/blackbears 2. mutualism- both benefit. ex:hippo/microbes in hippo stomach 3. predation- one benefits. ex: crocodile/fish 4. herbivory- one benefits/ ex: hippo/ grasses 5. Parasite and pathogen- one benefit ex:heartworm/dog
An ________________ _______________ is the sum of an organism's use of biotic and abiotic resources.
What are three protective strategies that prey use to adapt to their prey?
camouflage, mechanical defenses, chemical defenses
How are parasites different form pathogens?
pathogens are disease causing. Parasites live on or in a host and obtain nourishment.
A ___________ _________________ is a pattern of feeding relationships consisting of several different levels.
A _____________ ______________ is a sequence of food transfer up the trophic levels.
What is the difference between species richness and relative abundance?
richness is the count of species. abundance is the distribution of the species.
A _______________ _______________ has an impact on its community that is larger than its biomass or abundance indicates. It occupies a niche that holds the rest of its community in place.
What is a disturbance and what are a few examples?
events that damage biological communities. ex: storms, fire, flood, drought, overgrazing, or human activity
____________ _______________ follows a disturbance and represents colonization by a variety of species.
___________ _______________ begins in a virtually lifeless area with no soil.
______________ _______________ occurs when a disturbance destroys an existing community but leaves the soil intact.
What two components must be included in an ecosystem?
energy flow and chemical cycling
_______________ _______________ is the amount of solar energy converted to chemical energy.
What percentage of energy does each level of consumers get from the level below them in the food chain?
What percentage of energy do producers get at the bottom of the food chain?
__________________ ________________ cycle chemicals between organisms and the Earth
__________________ ________________ converts N2 to nitrogen used by plants.
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