all organisms of the same species in one particular area at the same time

growth that continues to increase and does not slow down or stop

growth that increases quickly at first but then levels off once a carrying capacity is reached

the maximum amount of organisms that an ecosystem can sustain long term

anything in an environment that slows or prevents the growth of a population

density-dependent factors

limiting factors that depend on the size of the population in an area; ex: amount of food or space

density-independent factors

limiting factors that affect all populations regardless of size; ex: tornado

when organisms leave an environment

when organisms enter an environment

when organisms compete for resources

two organisms working together for the benefit of at least one of the organisms

an organism that hunts and kills another for food

an organism that is hunted and killed for food

organisms that can produce their own food, typically through photosynthesis; bottom trophic level

organisms that must consume other organisms for food

organisms that can produce their own food; synonym for producers

organisms that eat other organisms for food; synonym for consumer

an animal that only eats plants

an animal that eats both plants and animals

an animal that eats only other animals

a type of symbiotic relationship where both organisms benefit

a type of symbiotic relationship where one organism benefits and the other is harmed

the second trophic level; eats producers; typically an herbivore

the third trophic level; eats primary consumers; typically an omnivore

the fourth trophic level and top of the energy pyramid; eats secondary consumers; typically a carnivore

diagram showing the trophic levels and how much energy is passed on from level to level

the position or role an organism occupies in a food web

the type of succession that starts with bare rock and NO soil; pioneer species include lichen and moss

the type of succession that starts with soil; pioneer species include grasses and flowers

large regions of land with similar climate; ex: desert, tundra, rainforest

large areas of water with similar climates; ex: freshwater rivers, marshes, open ocean, coral reefs

says that only 10% of the energy in an organism is passed to the next trophic level

a simple diagram showing one path of energy through an ecosystem

an organism that breaks down dead organisms and returns their nutrients to the soil

a more complex diagram with multiple pathways of energy flow in an ecosystem

a symbiotic relationship where one organism benefits and one is unaffected

states that concentrations of harmful chemicals increase as you move up the trophic levels; tertiary consumers have the highest concentration of chemicals such as DDT or mercury

biogeochemical cycles

a study of various elements that are essential to life and how they cycle between the land, atmosphere, water, and organisms in an environment

Unit 10: Ecology Vocab Flashcards Flashcards

Student preview

45 questions

Show all answers

1.

FLASHCARD QUESTION

Front

biosphere

Back

portion of Earth that supports life

2.

FLASHCARD QUESTION

Front

ecosystem

Back

all biotic and abiotic factors in an area and their interactions

3.

FLASHCARD QUESTION

Front

abiotic factors

Back

non-living parts of the environment

4.

FLASHCARD QUESTION

Front

biotic factors

Back

living parts of the environment

5.

FLASHCARD QUESTION

Front

community

Back

all of the biotic factors in an ecosystem; a collection of interacting populations

6.

FLASHCARD QUESTION

Front

J curve

Back

represents exponential growth

7.

FLASHCARD QUESTION

Front

S curve

Back

represents logistic growth

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