Review for Ecosystems Unit

Mr. Figueroa's science class is building a model of an ecosystem. Which of the following objects below would be living parts of the ecosystem model?

• Bowl of Water

• Tarantula

• Sand

• Plant

• Rock

Tags

NGSS.MS-LS2-3

Which of the following are biotic factors that organisms could compete for in an ecosystem? Select TWO correct answers.

• soil

• sunlight

• animals

• temperature

• plants

Tags

NGSS.MS-LS2-1

Organisms in an ecosystem compete for several different limited resources. Some of these resources are biotic, and others are abiotic. For every resource listed below, decide if it is an example of a biotic or an abiotic factor.

sunlight, temperature, plants, mating partners, water, prey

Groups:

(a) Biotic

,

(b) Abiotic

• plants

• temperature

• water

• prey

• mating partners

• sunlight

Tags

NGSS.MS-LS2-1

Which of the following statements accurately describe the flow of energy on the food chain displayed below? Select TWO correct answers.

• The mice are a direct source of energy for the grasshoppers.

• The grasshoppers receive energy from the grass.

• The grasshoppers provide energy to the grass.

• The owls receive energy from the consumption of mice.

• Both the grasshoppers and the mice are direct sources of energy for the owls.

Tags

NGSS.MS-LS2-3

Use the diagram of the food web to classify the organisms in the energy web by identifying which role is correctly placed in each position.

Use these words:

Producer, Primary Consumer, Secondary Consumer, Tertiary Consumer

Groups:

(a) 1

,

(b) 2

,

(c) 3

,

(d) 4

• Producer

• Primary Consumer

• Tertiary Consumer

• Secondary Consumer

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-3

Look at this diagram of an energy pyramid. Which statement describes the amount of energy passed to the banded mongooses as shown in this pyramid?

• The mongoose has 50 percent of the energy in the pyramid available to it.

• The mongoose has the most amount of energy available to it.

• The mongoose has no energy available to it.

• The mongoose has the least amount of energy available to it.

Tags

NGSS.MS-LS2-3

What is the first stage in primary ecological succession following a volcanic eruption?

• Small ferns and flowering plants start to grow on the island.

• Grasses and small bushes start to grow on the island.

• The volcanic island is barren and is composed of rock.

• Animals begin to migrate to the island.

Which type of plants appear on the island after lichens and mosses during primary ecological succession?

• Shade-tolerant trees

• Small ferns and flowering plants

• Grasses and small bushes

• Animals

What happens after the volcano erupts and the lava cools and hardens in primary ecological succession?

• Animals begin to migrate to the island.

• Lichens and mosses appear on the island.

• Shade-tolerant trees begin to populate the island.

• The volcanic island is barren and is composed of rock.

Miguel is studying succession using a card sort. He is separating primary succession from the secondary succession cards. Which cards describe primary succession?

• begins with a disturbance such as a fire

• occurs on preexisting soil

• occurs in a place lacking soil

• occurs over long periods of time