Ecosystem Dynamics and Wildebeest Population Regulation

The video explains the ecosystem as a pyramid, with plants at the base, herbivores like wildebeest in the middle, and predators like lions at the top. It discusses factors regulating wildebeest population, focusing on food supply (bottom-up regulation) and predators (top-down regulation).

In the ecosystem pyramid, which group is at the base?

• Decomposers

• Primary producers

• Herbivores

• Predators

What is one factor that could limit the growth of the wildebeest population?

• Migration patterns

• Climate change

• Food supply

• Availability of water

Which of the following is a top-down regulation factor for wildebeest?

• Predation by lions

• Plant growth

• Water availability

• Soil quality

What does bottom-up regulation refer to in an ecosystem?

• Food supply limiting population growth

• Herbivores controlling plant populations

• Predators controlling herbivore populations

• Climate affecting all species

If a population is limited by its predators, what type of regulation is this?

• Sideways

• Internal

• Top-down

• Bottom-up