Energy Flow in Ecosystems

Which group of organisms is missing from the food web above?

• Carnivore

• Herbivore

• Omnivore

• Decomposer

Tags

NGSS.MS-LS2-3

Looking at the chart below what type of organism is the Alaskan brown bear?

• Carnivore

• Herbivore

• Omnivore

• Decomposer

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

• Crab

• Egret

• Flounder

• Phytoplankton

Tags

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

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

How much energy will be available for the flounder if the plankton at the bottom of this pyramid is able to produce 10,000 kcal of energy from the photosynthesis?

• 1000

• 100

• 10

• 1

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

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

• Grass and Green plants

• Hawks and Deer

• Tadpoles and Fish

• Sun

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

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-LS2-2

NGSS.MS-LS2-4

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

A new species of hawk that feeds on snakes was introduced to this ecosystem. What is going to happen to the Kite population now that they are competing for snakes with the hawk?

• The kite population will increase.

• The hawks will have no influence on the population of kites because they have more food to eat.

• The kite will become better adapted to the environment.

• The kite population will decrease because they are now competing for food with the hawk.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4