Ecosystems 5.L.2.3 Pop Increase_Decrease

In a grassland ecosystem, lions prey on wildebeest. The population of wildebeest has declined steadily because of hunting. What will most likely happen to the lion population?

• The lion population will increase.

• The lion population will decrease.

• The lion population will remain the same.

When the prey population in an ecosystem increases, which will most likely happen to the predator population?

• The predator population will die out.

• The predator population will decrease.

• The predator population will gradually increase.

• The predator population will move to another ecosystem.

When does the greatest competition occur for food and water between organisms from different populations?

• when the populations require similar shelter

• when the populations occupy the same niche

• when the populations are in different ecosystems

• when the populations hunt at the same time of day

The seed shown grows on a short plant. The seed is covered by small points that can stick to other objects.

Which will most likely transport this seed to a new location?

• flowing water

• the pull of gravity

• the pull of gravity

• being carried by an animal

Which best describes the result if the number of lily pads in a pond ecosystem increases?

• Consumers of the lilypads would increase because of a larger food source.

• The lily pads would prevent fish from absorbing the sun’s energy.

• Consumers of the lilypads would decrease because of increased competition.

• The lilypads would use the oxygen in the air, which would lower the number of consumers.