Feeding Relationships and Predator-Prey Cycles in Ecosystems

The video discusses the interdependence of organisms in ecosystems, focusing on feeding relationships. It explores the impact of changes, such as the removal of grass, on community populations. Key ecological terms like producers, consumers, and food chains are defined. The predator-prey cycle is explained, highlighting how changes in prey populations affect predators and vice versa. The video concludes with a summary and preparation for assessment.

What is the immediate consequence if all the grass in a community is wiped out by disease?

• The population of frogs will increase.

• The population of owls will increase.

• The population of insects will decrease to zero.

• The population of snakes will increase.

Which of the following is considered a producer in an ecosystem?

• Frog

• Owl

• Snake

• Grass

What term is used to describe organisms that eat plants directly?

• Producers

• Primary consumers

• Secondary consumers

• Tertiary consumers

In a food chain, what does the direction of the arrow represent?

• The direction of sunlight

• The direction of water flow

• The direction of energy flow

• The direction of wind

Which of the following is an example of a tertiary consumer?

• Beetle

• Owl

• Grass

• Cricket

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

• The predator population increases immediately.

• The predator population decreases.

• The predator population remains constant.

• The predator population migrates to a new area.

In a predator-prey cycle, what typically happens after the predator population decreases?

• The prey population remains constant.

• The prey population migrates.

• The prey population increases.

• The prey population decreases.