Energy Flow In an Ecosystem

Which of the following has the largest population in the Indian River Lagoon system?

• Crab

• Egret

• Flounder

• Phytoplankton

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NGSS.MS-LS2-1

NGSS.MS-LS2-4

In the Indian River Lagoon System, many organisms compete for food. Which organism in the food web competes with the egrets for food?

• Clam worm

• Crab

• Flounder

• Heron

Tags

NGSS.MS-LS2-1

Which of the following statements most accurately describes the energy transfer between the levels of the food pyramid in the Indian River Lagoon System?

• Energy travels up the pyramid

• Energy stays in the phytoplankton at the lowest level

• Energy is released in the environment only at the top level

• Energy moves from the flounder to both the clam and the egret

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NGSS.MS-LS2-3

NGSS.MS-LS1-6

What is the primary source of energy for the ecosystem pictured above?

• Grass and Green plants

• Hawks and Deer

• Tadpoles and Fish

• Sun

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NGSS.MS-LS2-3

NGSS.MS-LS1-6

Observe the food chain below. What would be the result of disease killing off most of the mouse population?

• All populations would be relatively unaffected

• The grasshoppers would become extinct

• The grasshopper population would decrease; the owl population would increase

• The grasshopper population would increase and the owl population would decrease

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

NGSS.MS-LS2-2

In a particular ecosystem, a white-tailed deer feeds on branches from a red oak tree. Gypsy moth caterpillars also feed on the leaves of the oak tree. Acorns from the tree fall to the soil. Those acorns that take root grow into new oak trees over time. Which of the following is an abiotic factor in this ecosystem?

• Type of Soil
• Species of Caterpillar
• Number of Trees
• Species of Deer

Food chains usually do not go past third level consumers because

• There is nothing to eat the third level consumer.

• The amount of energy available is too low to support another level.

• Decomposers will quickly break down third level consumers.

• Third level consumer have no natural predators.

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NGSS.MS-LS2-3

NGSS.MS-LS2-1

Pick the best name for the picture.

• Food Web
• Food Chain 
• Ecosystem
• Habitat

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NGSS.MS-LS2-3

What is the definition of the word consumer?

• An animal that eats only plants
• An animal that eats other animals
• An organism that obtains energy by feeding on other organisms.
• The transfer (movement) of energy.

What is the definition of the word producer?

• An organism that can make its own food.
• An organism that obtains energy by feeding on other organisms.
• An animal that eats only plants
• An animal that eats other animals