Topic 11. Ecosystems Ecology

Animals and plants use substances that cycle through the environment.  Which substance is needed by plants to survive and is released into the environment by animals?

• oxygen
• sugar
• salt
• carbon dioxide

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Another term to describe producers is 

• consumer
• autotroph
• heterotroph

All food chains, food webs and energy pyramids begin with the ________________.

• consumers
• producers
• sun

Which statement is true about the carbon dioxide-oxygen cycle?

• animals breathe in nitrogen and release oxygen which is used by plants
• animals breathe in oxygen and release carbon dioxide which is used by plants
• animals breathe in nitrogen and release carbon dioxide which is used by plants
• animals breathe in carbon dioxide and release oxygen which is used by plants

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

The amount of energy passed from each level in an energy pyramid is _________.

• 1000
• 100
• 10%

Organisms at the top of a food chain are _____________ consumers.

• tertiary
• secondary
• primary

An ecosystem is a system consisting of all the interactions that occur between the abiotic and biotic factors of an environment.

• True

• False

Tags

NGSS.MS-LS2-3

Another term to describe consumer is 

• producer
• autotroph
• hetrotroph

What is an ecological model of the relationships that form a network of complex interactions among organisms in a community from producers to decomposers?

• food web
• an ecosystem
• food chain
• a population

Tags

NGSS.HS-LS2-4

NGSS.HS-LS2-6

What is the term for each step in the transfer of energy within a biological community?

• energy path

• food web

• trophic level

• food pyramid