Vocabulary
population
A group of individuals of the same species living together in the same area at the same time.
Organisms that break down dead plants and animals are called
decomposers
commensalism is the animals harming each other to get the same thing
false A symbiotic relationship between two organisms of different species in which one organism is helped while the other is neither helped nor harmed.
niche
All the interactions of a species within its ecosystem.
tertiary consumer
A consumer that obtains its energy and matter by eating secondary consumers (carnivores)
carrying capacity
The maximum population size that can be supported over time by a given environment.
A change from the normal or average conditions are called
disturbance
parasitism is living off of a other animal
true get out of the basement and get a job
terrestrial biomes
Land-based biomes.
producer
Any organism that is able to produce food for other organisms, putting it at the beginning of a food chain. It is also called an autotrophic organism.
population crash
A sudden and sharp drop in the size of a population that can result from a scarcity of resources, disease, or natural disaster.
Features of an environment that restrict the size of an individual or a population are called
limiting factors
ectoparasite are parasites that live outside the host
true
habitat
The place where a particular plant or animal lives, including the natural processes that maintain that area.
consumers
Any organisms that obtain their energy and matter by eating other organisms. They are also called heterotrophic organisms.
fixed percentage
The percentage by which a quantity grows or declines in a specific amount of time.
The maximum population size that can be supported over time by a given environment is called
carrying capacity
endoparasite is a parasite that dies as soon as it bites a host
false
symbiosis
A relationship between two species in which they live together and depend on each other for long periods of time.
food web
A diagram that uses food chains to show the feeding relationships among organisms in an ecosystem.
keystone species
A type of organism that has a greater or more crucial role than the other species in its community. The loss of a keystone species causes significant change in or even the total collapse of a community.
A pyramid-shaped graph that shows the distribution of the individuals in a population by age is a
age-structure diagram
detritivores obtain energy by eating dead biomass
true
mutualism
A symbiotic relationship between two organisms of different species in which both organisms gain from the relationship.
pyramid of biomass
An ecological diagram that uses biomass to compare the amounts of matter in the different trophic levels of a food chain or food web.