Jelly Population Explosion Quiz

What is a jelly population explosion?

• A sudden increase in the number of jellyfish in an ecosystem

• A decrease in the number of jellyfish in an ecosystem

• A change in the size of fish populations

• A stable ecosystem with a high biodiversity

Why are people concerned about jelly population explosions?

• They increase biodiversity

• They eat fish populations

• They damage fishing nets

• They have no impact on human activities

Where did the jelly population increase according to the study?

• Libya

• Algeria

• Southern Benguela

• Northern Benguela

What caused the jelly population increase in Northern Benguela?

• Increase in fish populations due to overfishing

• Decrease in fish populations due to overfishing

• Change in ocean currents

• Introduction of new species in the ecosystem

What is the relationship between jellies and sardines?

• No relationship

• Mutualistic relationship

• Predator-prey relationship

• Competition for the same food resource

Why did the jelly population not increase in Southern Benguela?

• Jellies migrated to other ecosystems

• Fishing limits maintained stable fish populations

• Biodiversity decreased

• Zooplankton population decreased

What is the measurement of how healthy an ecosystem is?

• Biodiversity

• Population size

• Competition

• Overfishing

What caused the jelly population increase in Northern Benguela according to the indirect effect diagram?

• The sardines ate more zooplankton

• The jellies had more zooplankton to eat

• The zooplankton population decreased

• The fish populations increased

What is the main message of the text?

• Jellies and fish have a predator-prey relationship

• Overfishing can lead to jelly population explosions

• Ecosystems with high biodiversity are unstable

• Jelly populations are not affected by human activities

What do scientists need to do to maintain healthy ecosystems?

• Ignore the impact of human activities on ecosystems

• Introduce new species into ecosystems

• Increase fishing in all ecosystems

• Come up with plans like fishing limits