Predator Prey Dynamics in Ecosystems

The video explores how different populations within an ecosystem interact, focusing on predator-prey dynamics. It explains the cyclic nature of these interactions, known as the predator-prey cycle, using a chart to illustrate population changes over time. A real-world example involving the snowshoe hare and Canadian lynx is discussed, supported by historical data showing their population cycles over a century.

What is the primary focus of the video regarding population interactions?

• Competition between species

• Predator-prey relationships

• Symbiotic relationships

• Mutualistic interactions

In the initial scenario, what is the state of the prey population?

• High

• Stable

• Decreasing

• Low

What happens to the predator population when prey is abundant?

• It decreases

• It remains stable

• It increases

• It becomes extinct

What is the term used to describe the cyclic interaction between predator and prey populations?

• Ecological balance

• Predator-prey cycle

• Food chain cycle

• Population equilibrium

Which two species are used as an example of the predator-prey cycle?

• Eagles and rabbits

• Snowshoe hares and Canadian lynx

• Lions and zebras

• Wolves and deer

Over what time period is the real data of snowshoe hares and Canadian lynx observed?

• 200 years

• 50 years

• 100 years

• 150 years

What happens to the predator population when the prey population is low?

• It migrates

• It increases

• It remains stable

• It decreases

What is observed when the predator population is high?

• Prey population decreases

• Prey population increases

• Prey population remains stable

• Prey population migrates

What is the relationship between predator and prey populations in the data?

• Directly proportional

• Inversely proportional

• Unrelated

• Random

What does the real data of snowshoe hares and Canadian lynx demonstrate?

• A stable ecosystem

• A random population change

• A predator-prey cycle

• A declining ecosystem