Organisms & Habitats
What term describes the place where an organism lives and gets what it needs to survive?
habitat
What type of organism makes its own food?
Producers
What is a food chain?
A series of events showing how energy moves as organisms eat one another.
What type of symbiosis benefits both organisms?
In a predator-prey relationship, this organism hunts and eats another organism for energy.
Predator
What includes both the living and nonliving things interacting in an area?
Ecosystem
What process do producers use to make food from sunlight?
Photosynthesis
This type of predator is at the top of the food chain and has no natural predators in its ecosystem.
apex predator
What type of relationship harms one organism while helping the other?
Parasitism
This term describes an organism’s role in its environment, including how it gets food and interacts with other organisms.
Niche
What are biotic factors?
Living or once-living parts of an ecosystem.
If a mushroom breaks down dead plants and animals in the soil, what type of organism is it?
Decomposer
What do arrows in a food chain represent?
The direction of energy flow.
What type of interaction benefits one organism but does not harm the other?
Commensalism
All members of one species living in the same area.
Population
Give two examples of abiotic factors.
Water, sunlight, temperature, rocks, or soil.
What are consumers?
Organisms that obtain energy by eating other organisms.
In a food chain or food web, arrows always point in this direction.
The direction energy flows
This term describes when organisms move into and begin living in a new area where they were not previously found.
Colonize
If decomposers suddenly disappeared from an ecosystem, this long-term effect would most likely occur.
Nutrients would not be recycled and producers would eventually decrease
Why are bacteria and fungi important biotic factors?
They break down waste and recycle nutrients.
This amount of energy is typically passed from one trophic level to the next in an energy pyramid.
10 percent of energy
If a crayfish eats plants, what type of consumer is it?
First-level consumer.
If a top predator is removed from an ecosystem, this is most likely to happen to the population of its prey.
The prey population will increase
This term describes the number of individuals of a species living in a specific area.
Population density