Which would result in primary succession?

Glacier retreating exposing bare rock

volcano destroying habitat leaving only soil and ash

Tornado destroying a crop leaving very little soil

How do lichens contribute to primary succession?

Lichens begin to break down rock to form soil

Lichens decompose organic matter from animals and plants

Lichens are nitrogen fixing bacteria

Lichens convert carbohydrates into fossil fuels.

After a volcanic eruption, lava covers the land. What is the order that plants grow to repopulate the area?

Lichens → Grasses → Shrubs → Trees

Lichens → Shrubs → Grasses → Trees

Lichens → tree → shrubs→Grasses

Grasses → Lichens → Shrubs → Trees

List at least three limiting factors that would negatively affect the squirrel population. (Look/click on the food web!)

amount of seeds/treenuts available

weather change in another ecosystem

What would be two consequence to the food web if the groundhog population dropped severely due to habitat destruction? (Look closely/click on the picture of the food web!)

Increased plant population due to fewer groundhogs eating them.

Decrease in predator population that relies on groundhogs for food (coyotes, bobcats & vultures).

No significant impact on the food web.

Increase in the population of other herbivores that are part of the ecosystem.

Which organism in this food web can be a part of two different trophic levels? (Look closely/click on the picture of the food web!)

the Blue Jay bird because it eats seeds (making it a primary consumer) and also eats worms grasshoppers (making it a secondary consumer)

the grass that is both a producer and a consumer making it an omnivore

A decomposer (a worm) that is also a producer that likes to produce other plants (making it a producer)

The coyote because it consumes squirrels and ground hogs making it a carnivore

Which organisms in this food web are tertiary consumers (3rd level)? (Look/click on the picture of the chart!)

blue jay, grasshopper, and seeds/treenuts

How could you increase the environment’s carrying capacity for the Blue Jay bird? (Look closely/click on the picture of the food web!)

By providing more food resources

By reducing the number of predators

By increasing the nesting sites (habitat)

Which of the following are ways that humans could negatively impact this ecosystem?

By introducing invasive species.

By removing the producers (ex., deforestation, building on the land)

By removing consumers (ex., overhunting)

By conserving the natural habitat

In a grasslands ecosystem, lions are top consumers (tertiary) that eat antelope. Antelope feed on the grasses that grow in this ecosystem. What impact would the sudden disappearance of lions due to overhunting most likely have on this ecosystem?

More antelopes would eat the grass

Antelopes would start to eat each other

The climate would grow increasingly larger

I believe that this model is showing ______ growth because ________.

logistic; the growth line is an "S" shape and shows the population reaching capacity and stopping growth

linear; the growth line is an "S" shape and shows the population growing and never stopping

exponential; the growth line is an "J" shape and shows the population growing and never stopping

quadratic; the growth line is an "J" shape and shows the population growing and never stopping

I believe that this model is showing ______ growth because ________.

exponential; the growth line is an "J" shape and shows the population growing over time and never stopping

linear; the growth line is an "S" shape and shows the population growing and never stopping

logistic; the growth line is an "S" shape and shows the population reaching capacity and stopping growth

quadratic; the growth line is an "J" shape and shows the population growing over time and never stopping

a deer population has significantly increased, the best hypothesis is

the deer's main predator has been eliminated

decreased water levels of local ponds

organisms that rely on similar food sources migrated to the area

an example of producer consumer relationship would be

grasshopper getting energy from grass

hawk getting energy from snakes

earthworm breaking down dead material

About how much percent of energy is passed on from one organism to to the next on a food web pyramid.

10 percent of all energy gets passed

100 percent of all energy gets passed

45 percent of all energy gets passed

0 percent of all energy gets passed

Unit 8: Ecological Concepts

Authored by Robert Large

Biology

9th - 12th Grade

NGSS covered

Used 20+ times

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The change in an ecological community over time.

ecological succession

Climax community

pioneer species

eutrophication

The first species to colonize a habitat.

ecological succession

Climax community

pioneer species

secondary species

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A pioneer species that breaks down rock in order to form a more compatible substrate for other, larger plants to grow. They spread their spores in order to reproduce.

lichens and mosses

primary succession

secondary succesion

aquatic succession

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Succession that begins with rocks.

lichens and mosses

primary succession

secondary succesion

aquatic succession

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which image shows the beginning of primary succession?

Which image shows a climax community?

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which type of succession is shown in the images?

primary succession

secondary succession

aquatic succession

no succession

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Unit 8: Ecological Concepts

The change in an ecological community over time.

The first species to colonize a habitat.

A pioneer species that breaks down rock in order to form a more compatible substrate for other, larger plants to grow. They spread their spores in order to reproduce.

Succession that begins with rocks.

Which image shows the beginning of primary succession?

Which image shows a climax community?

Which type of succession is shown in the images?

After a volcanic eruption, ________________ would occur.

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

Which catastrophic event will most likely have the effect of returning an ecosystem to primary succession?

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