Food Chains
What do we call the series of organisms through which energy flows in an ecosystem?
What is a food chain?
How does a food web differ from a food chain?
What is a food web shows multiple interconnected food chains in an ecosystem?
What do energy pyramids illustrate about energy flow in an ecosystem?
What is they show the decrease in available energy at each successive trophic level?
What is the term for a relationship in which one organism hunts and kills another for food?
What is predation?
What is the name of the process by which plants make their own food?
Photosynthesis
In a food chain, what type of organisms always occupy the first trophic level?
What are producers or autotrophs?
What LEVEL do omnivores play in a food web?
What is they can occupy multiple trophic levels by consuming both plants and animals?
Which trophic level typically has the most energy in an energy pyramid?
What are producers or autotrophs?
Give an example of mutualism
What is the relationship between bees and flowers (pollination)?
What is an autotroph?
Organisms that make their own food (aka producers)
Why are decomposers important in food chains?
What is they break down dead organisms and recycle nutrients?
What is competition?
What happens to MOST of the energy at each trophic level? MUST INCLUDE PERCENTAGE
90% is converted to heat
What is commensalism?
relationship in which one species benefits and the other is neither helped nor harmed.
What is a heterotroph?
What is an organism that cannot produce its own food, instead taking nutrition from other sources (aka consumer)
Organisms that eat dead plants or animals are called what?
Scavengers
something that shows how ALL the animals in a COMMUNITY get their energy (food)
Food Web
What is the approximate energy percent that is transferred between trophic levels?
What is around 10%?
What is an organism's role or job in the environment called?
What is niche
What are living things within an ecosystem; such as plants, animals, and bacteria,
Biotic Factors
Food Chain Example
Grass--> Mouse--> Snake---> Hawk
What organism would increase if another predator of the snake came into the ecosystem?
The mouse would increase
What 3 roles can an organism be in a food web?
Producer, consumer, or decomposer
Which trophic level has the largest number of organisms in an energy pyramid?
trophic level 1-producers
What term describes a close, long-term relationship between two or more species that benefits at least one of the species?
What is symbiosis?
What are non-living components; such as water, soil and atmosphere?
Abiotic Factors