Ecosystems Flashcards
What is the biosphere?
portion of earth that supports life
What is the biotic factor?
living factors in the ecosystem
What is the abiotic factors?
non living factors in the ecosystem
What are the levels of organization?
organism, population, community, ecosystem, biome, biosphere
What is population?
individual organisms that come from the same species that live in the same geographic location and time.
What is population?
individual organisms that come from the same species that live in the same geographic location and time.
What is community?
a group of populations
What is ecosystem?
a community + abiotic factors around it
What is a biome?
a group of ecosystems with similar types of communities
What are the 5 things every ecosystem should contain?
producers, consumers, decomposers/detrivores, physical environment
What are producers?
plants that make their own food
What are primary consumers?
herbivores, they eat the producers
What are secondary consumers?
carnivores, they eat the herbivores
What are tertiary consumers?
carnivores, eats other carnivores (secondary consumers)
What are quaternary consumers?
carnivore that eats the tertiary consumers, they are the top carnivore
What is niche?
role an organism plays in it’s environment
What are the three community interactions?
feeding among the organisms, competition among organisms, interactions between organisms and environment
What is “feeding among the organisms”?
animals, plants, and decomposers are constantly recycling the same nutrients through the ecosystem
What is “competition among organisms”?
animals compete for food shelters, and resources. plants compete for carbon dioxide, air and water
What is “interactions between organisms and environment”?
plants absorb carbon dioxide and water from the environment
What is predation?
act of one organism consumer the other
Who is the prey and predator?
the prey is the one being pursued, the predator is the one that pursues
What is the prey and predator between lion and deer
the deer is the prey
the lion is the predator
What are the three symbiotic relationships?
mutualism, commensalism, and paratism?
What is mutualism and give example
mutualism is the relation when two organisms benefit between each other.
ex: bacteria living in a plant, plant gives bacteria a place to live, bacteria absorbs nutrients from the soil needed by the plants
What is commensalism and give example
relation where one benefits and the other is neither helped nor harmed.
ex: bird nest and tree; tree gives the bird a place to stay, while the tree is neither helped nor harmed
What is parasitism and give example
relation where one benefits and the other is harmed; a tick living in a dog, the tick benefits by having a place to stay, but the dog is hurt
What are decomposers?
they break down dead organisms and release it into the environment
What are detrivores?
they break down dead organisms and use it for themselves as nutrients
What is symbiosis?
close relationship between two or more species
