Flow of Energy and Matter

The energy for most ecosystems originally comes from the Sun.

• True

• False

Primary Producers are usually...

• Plants

• Animals

• Bacteria

• Fungi

Primary Producers are also known as...

• Autotrophs

• Heterotrophs

• Decomposers

Those who feed on Primary Producers are called...

• Primary Producers

• Primary Consumers

• Primary Decomposers

What percentage of energy gets transferred from one trophic level to the next one?

• 1%

• 10%

• 12%

• 99%

Those who feed on Primary Consumers are called...

• Secondary Producers

• Primary Consumers

• Secondary Consumers

Those who feed on Secondary Consumers are called...

• Tertiary Consumers

• Primary Consumers

• Secondary Consumers

What organism is a primary consumer in the food web?

• Grass

• Snake

• Grasshopper

• Hawk

What organism is a primary producer in the food web?

• Grass

• Snake

• Grasshopper

• Hawk

Which of the following is a difference between food chains and food webs?

• Food webs separate organisms by trophic level, but food chains do not.

• Food chains are linear, while food webs are complex.

• Food webs contain both plants and animals, but food chains contain only plants.

• Food chains show energy flow in an ecosystem, and food webs do not.