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2.1 & 2.2 Note Flashcards
Terms in this set (19)
What is the difference between biotic and abiotic factors?
Biotic factors are living organisms. Abiotic factors are nonliving organisms.
What is an example of an abiotic and biotic factor in the bioshpere?
Write the levels of organization in the biosphere from the smallest to largest.
Organism, population, biological community, ecosystem, biome, biosphere.
What is the difference between habitat and niche?
Habitat is where an organism lives. Niche is a role an organism has in its environment.
What is competition and give an example of it?
The act to compete.
Ex. When animals compete for food.
What is predation and provide an example?
The act of one organism consuming another organism for food.
Ex. When two ducks fight for bread.
What are the three types of symbiosis?
1. Mutualism 2. Commensalism 3. Parasitism
What is mutualism and provide an example of it?
The relationship between two or more organisms that live closely together and benefit from each other.
Ex. Fungi and algae
What is commensalism? Provide an example.
A relationship in which one organism benefits and the other organism is neither helped nor harmed.
Ex. Clownfish and sea anemones
What is parasitism? Provide an example.
A symbiotic relationship in which one organism benefits at the expense of another organism.
Ex. Ticks and fleas
What is an autotroph? Provide an example.
An organism that collects energy from sunlight or inorganic substances to produce food.
Ex. All green plants and other organisms that produce their own food.
What is a heterotroph? Provide an example.
What is an omnivore? Provide an example.
Organisms that eat both plants and animals.
Ex. Bears, humans, and mockingbirds.
What is a detritvore? Provide an example.
They eat fragments of dead matter in an ecosystem, return nutrients to the soil, air and water where the nutrients can be reused by organisms.
Draw a food chain of at least three organisms. Make sure to label your trophic levels and draw your arrows in the right direction (start with an autotroph):
(Look back in note packet, question 15, to see this answer)
Place these organisms in a food web: snake, frog, rabbit, grass, insects, and hawk.
(Look back in note packet, question 16, to see food web)
Draw a pyramid of energy below:
(Look back in note packet to see the pyramid of energy)
What are the other ecological pyramids?
Pyramid of biomass and pyramid of numbers.
How much energy is passed between trophic levels and why is that the case?
10% is passed because 90% isn't transferred to the level above it.
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