Roles in an Ecosystem
Organisms that break down dead plants or animals into the substances that plants need for growth
Decomposers
What word describes a group of individuals of a particular species?
Population
Does not help their host, but they do not harm them either.
Commensalism
What shows the order in which organisms eat each other and get the energy that they need to survive?
A food chain
In an ecosystem, what word describes factors that are living things, such as plants and animals?
Biotic factors
What word describes a group of two or more populations within an ecosystem?
Community
When organisms have a relationship where they both benefit
Mutualism
All food chains start out with a plant or a _________?
Producer
In an ecosystem, what word describes factors that are nonliving things, such as rocks, water and the sun?
Abiotic factors
What factors could make a population decrease?
*Answers may vary* Habitat loss, destruction, natural disasters, deforestation
An animal that hurts another
Parasite
What are animals that get their energy by eating plants or other animals are called?
Consumers
What role would a fox have in an ecosystem?
Consumer
What could happen to a population of deer in a particular area when it is not hunting season?
The population can increase
A type of relationship where one animal gets harmed and the other benefits
Parasitism
GRASS-----ZEBRA-----LION
Which organism is the primary consumer?
Zebra
What role would a worm have in an ecosystem?
Decomposer
What is the difference between a population and a community?
A population is a group of one particular species and a community is a group of two or more populations within an ecosystem.
Name the symbiotic relationship:
A spider uses a tree to build its web. The tree is not impacted but the spider needs the tree for shelter and safety.
Mutualism
GRASS---GRASSHOPPER---FROG---SNAKE---EAGLE
Which organism obtains the least amount of energy?
Eagle