Food Webs & Ecological Pyramids

Which group is not represented in the food web?

• producers

• primary consumers

• secondary consumers

• decomposers

Tags

NGSS.MS-LS2-3

The diagram shows part of an aquatic food web for a stable lake ecosystem in Connecticut. What is the source of energy for the algae?

• waves

• sunlight

• bacteria

• rotifers, water fleas and tadpoles

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

Suppose that a new predator of the rabbit migrated to this ecosystem. What is the most likely initial effect on the other organisms?

• More competition among the mice for food

• More competition among the hawks for food

• Less competition among snakes for food

• Less grass available for food

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

NGSS.MS-LS2-2

The diagram provided shows a marine food chain. In this food chain, the zooplankton are

• primary producers.

• primary consumers.

• secondary consumers.

• tertiary consumers.

Tags

NGSS.MS-LS2-3

The picture shows an energy pyramid. What will most likely happen to the foxes and the wolves if the rabbits are removed?

• The foxes will eat more wolves.

• The foxes will eat fewer wolves.

• There will be more foxes and wolves.

• There will be fewer foxes and wolves.

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Which of the following would be the most likely effect, if there were a sudden increase in the cricket population?

• There would be a decrease in the small bird population.
• There would be a decrease in the grass/flowers population.
• There would be a decrease in the mice population.
• There would be an increase in the grass/flowers population.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

NGSS.MS-LS2-2

In a food web, arrows point at:

• who gets energy.
• who gets eaten.

Tags

NGSS.MS-LS2-3

If a producer starts with 20,000 kcal of energy, how much energy would a TERTIARY consumer have?

• 20 kcal

• 200 kcal

• 2,000 kcal

• 2 kcal

Tags

NGSS.MS-LS2-3

If a secondary consumer has 100 kcal of energy, how much energy did producers have?

• 1,000 kcal

• 10,000 kcal

• 100,000 kcal

• 10 kcal

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

Which organism in the food web shown to the right would

contain the lowest concentration of chemical pollutants?

• producers

• primary consumers

• secondary consumers

• tertiary consumers

Tags

NGSS.MS-LS2-3