ECOLOGY Flashcards
What is the difference between a biotic and abiotic factor?
Biotics are living things and abiotic factors are nonliving things.
What is the difference between an ecosystem and community
A community is all of the organisms living in an area (ie-trees, frogs, crabs). However, an ecosystem is all of the living and nonliving things (ie-trees, frogs, crabs, rocks, water)
What is a biotic factor?
A living thing
What is an abiotic factor?
A non-living thing.
What is mutualism?
When both organisms benefit in a relationship. (+,+)
What is commensalism?
A relationship where one organism benefits but the other is not affected. (+,0)
What is parasitism
Where one organism benefits but the other is harmed in a relationship. (+,-)
Why are worms important in an ecosystem
Worms are decomposers. They are important because they break down dead organisms and turn them into nutrients, like nitrogen. They return nutrients back to the soil for producers to use.
How do plants rely on animals?
Plants rely on the carbon dioxide animals breathe out to perform photosynthesis to make their own food.
In the food web in your review sheet, what is the source of energy?
Sun
Identify one producer in the web.
Grass, Acorn, Berries
What would happen to the population of leopard frogs if the number of copperheads increase? Explain.
They would decrease
Which organisms are competing for the berries?
Red squirrel, Robin, Grasshoppers
Which animal has the least energy? Why?
The copperheads have the least energy. They are tertiary consumers at the top of the food web. As energy gets transferred from one organism to another, most of the energy is lost as heat or movement so little energy gets transferred to the next trophic level.
Name all the parts in a food web
Producer, Primary consumer, Secondary consumer, Tertiary consumer, Apex predator, Decomposer
