7.10C Ecological Succession

Which statement describes ecological succession in progress?

• A forest fire destroys several hundred acres of wilderness

• New varieties of tress emerge with an increased number of predators

• Some organisms are forced to migrate because of the environmental stress of a drought

• Decreased number of tree varieties emerge with a decrease in predator populations

Tags

NGSS.MS-LS2-4

Which statement provides evidence that primary succession is occurring?

• Lichens appear on volcanic rock

• A drought kills some varieties of producers

• Grass emerges in an area devastated by fire

• A population explosion of producers brings new organisms into an established ecosystem

Ecological succession occurs after a forest fire. Which order accurately depicts the progression of ecological succession in this forest after the forest fire?

• Y, X, W, Z

• Z, W, X, Y

• X, Y, Z, W

• X, Y, W, Z

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-1

NGSS.MS-LS2-3

A student discovers a large, flat rock where lichens and moss are growing. Which type of succession has the student observed?

• Primary

• Tertiary

• Final

• Reaction

What type of animals must move into the environment before succession can begin?

• Equilibrium species

• Pioneer species

• Decomposers

• Consumers

Which is NOT an example of ecological succession observed in a microhabitat?

• Grass growing in sidewalk cracks

• Insects hatching in cow manure

• Garden being invaded by weeds

• Absence of soil nutrients

How will an area begin to recover after a forest fire?

• Animals return first and then grass, shrubs, small trees, and large trees

• Trees return first and then grass, shrubs, and animals

• Grass returns first and then shrubs, small trees, and large trees

• Small trees return first and then large trees, grass and shrubs

Tags

NGSS.MS-LS2-4

A hiker approaches a well-established mountain. There are large animals and trees in the habitat. What term best identifies the community?

• Final community

• Primary community

• Climax community

• Habitation community

Why does primary succession take longer than secondary succession?

• Primary succession begins with nutrient-rich soil and secondary succession does not

• Primary succession begins with desolate land

• Secondary succession begins with a rocky environment

• Secondary succession is a long-term change and primary succession is a short-term change

If succession continues, which result could students expect to find if they left a schoolyard microhabitat undisturbed for 50 years?

• The populations of organisms living in the habitat would be larger and more well established

• Biodiversity would decrease in the habitat

• The habitat would no longer be there because microhabitats are not capable of long-term existence

• There would be fewer varieties of organisms living in the habitat

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-1