Energy Transformation in Food Web

In an ecosystem the energy flows from:

• From consumer to producer

• From producer to consumer

• It flows in both directions

• None of the answers is correct

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NGSS.MS-LS1-6

NGSS.MS-LS2-3

When a rabbit eats grass, it takes a certain amount of energy. When a fox eats the rabbit, all the energy the rabbit took from the grass is transferred to the fox.

• TRUE

• FALSE

Tags

NGSS.MS-LS2-3

Most of the energy a primary consumer takes from a producer is lost before a secondary consumer eats him, in turn.

• TRUE

• FALSE

Tags

NGSS.MS-LS2-3

Some of the energy organisms capture either from the sun (autotrophs) or from other organisms (heterotrophs) is spent when they run, they reproduce or vanish in heat.

• TRUE

• FALSE

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NGSS.MS-LS1-7

NGSS.MS-LS2-3

Arrows in a food web represent...

• eating

• sunlight

• energy

• matter

Tags

NGSS.MS-LS2-3

Students researching the relationships between some organisms in the Lavaca Bay ecosystem in Texas made this partial food web.

Select the organisms that receive at least some of their energy directly from other organisms that produce their own food?

Answer explanation

Plants produce their own food.

Swamp rabbits eat plants.

Swamp sparrows eat plants.

Hermit crabs eat plants.

You can tell phytoplankton are producers because they don't have an arrow going towards them, only away from them. They are producers, not consumers.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

which statement correctly describes the transfer of energy in a food chain in this ecosystem?

• energy is transferred from berries to bears to elk

• energy is transferred from grasses to marmots to bobcats

• energy is transferred from bobcats to grouses to grasses

• energy is transferred from grasses to elk to grouses

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-3

A partial desert food web is shown. Select the consumers that obtain their energy from other consumers.

Answer explanation

Consumers are animals. This list contains consumers (animals) that eat other consumers (animals):

Cheetahs, spotted hyenas, barn owls, Grant's golden moles. They are all carnivores (meat-eating animals).

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-3

Click on the consumer(s) that receive energy directly from microscopic planktonic algae

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

How much energy does trophic level 2 store from trophic level 1? (and so on..)

• 1%

• 10%

• 50%

• 100%

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3