Energy Flow in an Ecosystem

What type of flow does energy have when one organism consumes another?

• Unidirectional flow

• Bidirectional flow

• Cyclic flow

• Random flow

Tags

NGSS.MS-LS2-3

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

• 10%

• 20%

• 30%

• 40%

Tags

NGSS.MS-LS2-3

Which organisms capture energy above ground from the sun?

• Photo-autotrophs

• Chemo-autotrophs

• Heterotrophs

• Decomposers

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Which of the following are heterotrophs? (they get nutrients and energy by consuming other organisms.

• Chemo-autotrophs

• Bacterial and fungi

• Herbivores

• photosynthetic organisms

What is the position of an organism in a food chain called?

• Trophic level

• Habitat

• Niche

• Ecosystem

Tags

NGSS.MS-LS2-3

Herbivors are only found in trophic level ____.

Which organism is an omnivore?

• Leaf/acorn

• caterpillar

• mouse

• owl

Tags

NGSS.MS-LS2-2

Why do higher trophic levels have fewer organisms?

• Because only 10% of the energy can be transferred from one level to the next.

• Because they have more predators.

• Because they have less sunlight.

• Because they have more competition for resources.

Tags

NGSS.MS-LS2-3

What do decomposers do with dead organisms or their waste?

• Recycle nutrient MATTER required by the autotrophs.

• Make available the ENERGY required by autotrophs

• Convert dead organisms or their waste into fossil fuels.

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4

What does the sun provide?

• Matter

• Energy

• Both Matter and Energy

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3