Body Systems, Plants, Ecology

Owls and mice are in a predator-prey relationship because owls

• help mice find food.

• protect mice from predators.

• compete with mice for food.

• hunt and eat mice.

Directions: A diagram of interactions in a forest ecosystem is shown. Use the diagram and your knowledge of science to answer any questions that follow.

Deer and shrubs are in a producer-consumer relationship because deer

• use shrubs for shelter.

• fertilize shrubs

• feed on shrubs

• compete with shrubs

Which of the following is most likely required for an ecosystem to remain stable?

• a temperature and atmospheric pressure that remain constant

• a cycling of materials between biotic and abiotic components

• a greater number of consumers than producers

• a soil that is composed only of neutral materials

A sunflower farmer has a large crop at the beginning of September. By the end of September, his crop has been significantly destroyed by an insect population. As a way to prevent the insects from destroying all his crop, the sunflower farmer sprays his sunflowers with an insecticide to kill the insects. The graph shows the farmer's sunflower crop population during this time period.

Which statement best describes the information in the graph?

• The introduction of insects decreased the population of the sunflower crop, then the insecticide helped to increase the population of the sunflower crop.

• The introduction of insects increased the population of the sunflower crop, then the insecticide helped to decrease the population of the sunflower crop.

• The introduction of insects decreased the population of the sunflower crop, then the insecticide helped keep the population of the sunflower crop constant.

• The introduction of insects increased the population of the sunflower crop, then the insecticide helped keep the population of the sunflower crop constant.

What does D on the graph represent?

• Carrying Capacity

• Growth

• Limiting Factors

• Climax

Tags

NGSS.HS-LS2-1

Where is the population increasing most rapidly (EXPONENTIALLY)?

• Before point A

• After point B

• Between point A and point B

• This population never increases rapidly.

Tags

NGSS.HS-LS2-1

NGSS.HS-LS2-2

Which of the following explains the carrying capacity for a particular species?

• The maximum number of organisms that are in their post-reproductive years.

• The maximum number of organisms that can be supported by a given environment.

• The maximum number of organisms that the species could reach in a given time period.

• The maximum number of organisms that can be supported if there are no limiting factors.

Tags

NGSS.HS-LS2-1

Which of the following graphs illustrates the population growth curve of bacteria growing in a flask of ideal conditions with unlimited resources?

• Graph A

• Graph B

• Graph C

• Graph D

Tags

NGSS.MS-LS2-1

Which of the following graphs illustrates the growth curve of a small population of rodents that has grown to reach a stable carrying capacity?

• Graph A

• Graph B

• Graph C

• Graph D

• Graph E

Tags

NGSS.HS-LS2-1

NGSS.HS-LS2-6

What is the carrying capacity of this population?

• 100
• 200
• 300
• 400

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4