Cycling of Matter and Energy

Through which process do producers convert sunlight into food energy which is consumed and passed on to other organisms?

• oxidation

• reduction

• photosynthesis

• cellular respiration

Tags

NGSS.MS-LS1-6

Which process will directly result in organic matter being added to the soil?

• water freezing in cracks of rocks

• glaciers carving out a valley

• river water eroding the banks of a stream

• bacteria breaking down dead matter

Tags

NGSS.MS-LS2-3

In an energy pyramid, the total energy available for consumption from one trophic level to the next one above it is

• reduced

• conserved

• multiplied

• evenly distributed.

Tags

NGSS.MS-LS2-3

Which best describes the relationship between decomposers and producers?

• Decomposers provide producers with water.

• Decomposers absorb nutrients produced in the soil.  

• Producers release energy from the sun through decomposers.  

• Producers absorb nutrients from decomposed material in the soil

Tags

NGSS.MS-LS2-3

The ________ is the ultimate source of the energy in an ecosystem.

• sun

• moon

• plants

• animals

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

The first trophic level includes ________. 

• producers

• consumers

• animals

• insects

Tags

NGSS.MS-LS2-3

As you move up an energy pyramid, energy is ________.

• lost

• gained

• mixed

• eaten

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Study the diagram of an energy pyramid for an environment. Which statement about the flow of energy in an environment is true?

• Energy will flow from the top carnivores to the carnivores.

• Energy will flow from the top carnivores to the herbivores.

• Energy will flow from the herbivores to the carnivores.

• Energy will flow from the carnivores to the herbivores.

Tags

NGSS.MS-LS2-3

Examine the diagram showing a pond food web. Which organisms would provide a role in the food web that is most similar to the algae's role?

• beetles

• diatoms

• shrimp

• snails

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

Which best demonstrates a producer in an ecosystem?

• fox

• bear

• grass

• rabbit