Roles in an ecosystem

Roles in an ecosystem

Multiple Choice

In an experiment conducted in a science classroom the students changed the salt concentration of the tank to see how the fish reacted. What is the name is given to an experimenter changing the concentration of salt?

• Dependent variable

• Independent variable

• Control

• None of these answers

Multiple Choice

The thing that is measured or being observed in an experiment is......

• control

• Independent variable

• Dependent variable

• Control

Lessons objective

• Define different roles in an ecosystem

• Practice questions on roles in an eocystem

Position/Roles in ecosystem

• Decomposers- Break down dead organism

• Producers 1st Level

• Primary consumers 2nd level

• Secondary consumers 3rd Level

• Tertiary consumers 4th level

Producers/Autotrophs

• They make their own food using sunlight- carbon dioxide and water

• In the depths of the ocean organisms produce food using chemicals. This is called chemosynthesis

• Producers are the highest in number

Primary concsumers/Herbivores

• Feed on plants or producers

Secondary consumers( Carnivores/Omnivores)

• Consumer or feed on primary consumers and producers- 

• 3rd level

Tertiary consumers

• Feed on the lower levels 

• Tend to be carnivores or omnivores