Ecosystem Factors
These are the living parts of an ecosystem.
What are biotic factors?
A lion hunting and eating a zebra is an example of this relationship.
What is predation?
One single living thing is called this.
What is an organism?
This instrument allowed scientists to discover cells.
What is a microscope?
Organisms that make their own food are called these.
What are autotrophs?
Water, sunlight, and temperature are examples of these factors.
What are abiotic factors?
In this symbiotic relationship, both organisms benefit.
What is mutualism?
A group of the same species living in the same area is called this.
What is a population?
This scientist first observed cork cells and named them “cells.”
Who is Robert Hooke?
Organisms that must consume other organisms for energy are called these.
What are heterotrophs?
When two organisms try to use the same limited resource, this occurs.
What is competition?
A tick feeding on a dog is an example of this type of relationship.
What is parasitism?
All the different populations living together in an area form this.
What is a community?
According to cell theory, all living things are made of one or more of these.
What are cells?
Bacteria are examples of these cells because they do not contain a nucleus.
What are prokaryotic cells?
Plants in a forest competing for sunlight are competing for this type of factor.
What is an abiotic factor?
In this relationship, one organism benefits while the other is unaffected.
What is commensalism?
A pond with fish, frogs, insects, and plants contains many of these.
What are populations?
According to cell theory, new cells come from these.
What are pre-existing cells?
Plant and animal cells are examples of these because they contain a nucleus.
What are eukaryotic cells?
A drought would most directly affect organisms because of the reduced availability of this resource.
What is water?
A bee getting nectar while pollinating a flower is an example of this relationship.
What is mutualism?
Put these levels in order from smallest to largest: community, organism, population.
What is organism → population → community?
Cells are considered the basic unit of this and function in organisms.
What is structure?
An organism made of only one cell is described as this.
What is unicellular?