Predator-Prey Dynamics and Relationships

The video explores predator-prey relationships, focusing on factors affecting their populations. It discusses examples like foxes and rabbits, and analyzes a graph showing population dynamics over 17 years. The video also covers local ecosystem examples and factors such as competition, food availability, and disease that influence these populations.

What is the primary focus of the video in the context of ecosystems?

• Human impact on ecosystems

• Climate change effects

• Predator-prey relationships

• The role of plants in ecosystems

In a predator-prey relationship, what is the role of the predator?

• To provide shelter

• To hunt and consume the prey

• To compete with the prey for food

• To be consumed by the prey

Which of the following is an example of a predator-prey pair?

• Lion and zebra

• Fish and water

• Elephant and grass

• Human and tree

What happens to the predator population when the prey population increases?

• The predator population becomes extinct

• The predator population remains stable

• The predator population decreases

• The predator population increases

What is the effect on prey population when predator numbers increase?

• Prey population becomes extinct

• Prey population remains stable

• Prey population decreases

• Prey population increases

What could cause a sudden decrease in prey population according to the hypothetical graph?

• Introduction of a virus

• Increase in prey birth rate

• Introduction of a new predator

• Decrease in predator population

What is the time lag between the peaks of predator and prey populations in the hypothetical graph?

• One month

• Five years

• One year

• Three years

Which factor does NOT affect predator-prey populations?

• Number of shelters

• Birth and death rates

• Availability of food

• Color of the prey

How does competition affect predator-prey populations?

• It increases the number of prey

• It has no effect

• It decreases the number of predators

• It affects the population numbers

What role does the size of the ecosystem play in predator-prey dynamics?

• It has no impact

• It only affects the prey

• It determines the color of the prey

• It supports the number of predators and prey