Ecology

The Kaibab National Forest is a 450 square mile area filled with thick trees, streams, and rock studded mountains. It is home to large populations of deer, elk, and many other organisms. It is surrounded by other forests in the same area. What type of ecological level is this a description of?

• Population

• Biosphere

• Species

• Ecosystem

Tags

NGSS.MS-LS2-1

Carrying capacity is __________

• The number of organisms in a community

• The number of organisms that an ecosystem can support over time

• The factor that controls a population

• When the population reaches its biotic potential

When looking at an ecosystem, what would happen if a keystone species went extinct?

• The ecosystem would collapse and all of the species in it would go extinct.

• Some of the species would go extinct, and all others would be affected.

• Many of the species will be affected, though none of them will go extinct.

• Only the keystone species will be affected, the others will not change.

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-4

NGSS.MS-LS2-5

What is true about the relationship between a population and a community?

• A population does not specify the area they live, a community does.

• A time frame is not specified for a population, it is for a community.

• Populations and communities are the same thing.

• A community includes all of the different populations in an area.

What is the calculated carrying capacity of this graph?

• 380 organisms

• 400 organisms

• 420 organisms

• 440 organisms

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

A non-native species is accidentally introduced to the island that out-competes the deer for the acorns that are a main part of their diet. What could potentially happen to the population of deer on the island?

• The population of deer would increase

• The population of deer would decrease

• The population of deer would stay the same

• The deer population would leave the island

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Which of the following is true about primary succession?

• It occurs after a forest fire

• It starts with bare rock

• It takes only a few years to complete

• The first organisms to grow are trees and bushes

Based on the graph, what is causing the population of the predator to go up and down?

• Food supply

• Space

• Water availability

• Predation

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

What is a limiting factor?

• A factor that controls or limits a population's growth rate

• A factor that increases a population's biotic potential

• A factor that helps to establish a population's biodiversity

• A factor that includes only abiotic factors

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-4

Which of the following is true about secondary succession?

• It takes thousands of years to establish the climax community

• It starts off with bare rock

• It occurs after a forest fire

• The first organisms to grow are trees and bushes.