7th Grade Final

Dark-colored peppered moths can be found on trees. In Europe in the early 1800's, the tree bark was light colored and dark-colored peppered moths were very rare during this time. What most likely is the reason for this?

• Dark moths couldn't be spotted by predators against the light tree bark.

• Dark moths were easy to spot against the light tree bark, so they were eaten by predators more often.

• Predators did not like to go near trees with light colored bark because it had a foul scent.

• Predators didn't eat dark-colored moths because they have a bitter taste.

Tags

NGSS.MS-LS4-4

What will happen first as the land recovers during secondary succession?

• Climax Community

• Breakdown of rock into soil

• Appearance of weeds and grass

• Arrival of squirrels

What is the correct sequence of the pictures below that will demonstrate the process of ecological succession happening in an ecosystem?

• Y, X, W, Z

• X, Y, W, Z

• Z, W, X, Y

• Y, W, Z, X

Islands sometimes form when a volcano erupts and leaves a newly formed surface of cooled lava that weathers and forms soil. The gradual growth of lichens, mosses, and grasses in the island’s new soil are the first stages of ....

• Erosion

• Weathering

• Secondary Succession

• Primary Succession

A watershed is an area of land ...

• from which water flows into a larger body of water such as a river, lake, stream, ocean or aquifer.

• paved with concrete and used to collect rainwater

• a house made of water

• similar to a marsh or estuary

Tags

NGSS.MS-ESS2-4

After an ecosystem completes the process of succession, the end result is called ____________________.

• Primary Succession

• Climax Community

• Secondary Succession

• Pioneer Species

Which of these is NOT an impact to an ecosystem after a hurricane?

• Massive flooding in the streets

• Erosion of beach shorelines

• Poor drinking water quality

• Fires erupting through the city

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

The first species to appear in a new area of land are called ________________.

• pioneer species

• new species

• colonizing species

• discovering species

What is formed during primary succession that doesn't need to be formed during secondary succession?

• Lichen

• Pioneer Species

• Grass

• Soil

What is the main difference between primary and secondary ecological succession?

• Primary begins WITH soil; Secondary begins WITHOUT soil

• Primary begins WITHOUT soil; Secondary begins WITH soil

• They are both the same

• Primary builds plant community; secondary builds animal community