Test Review 8.L.3 Populations & Ecosystems

Front

What is parasitism?

Back

A relationship between two organisms where one organism benefits and the other is negatively affected.

Front

What is the role of producers in a food web?

Back

Producers, such as plants, are organisms that create energy through photosynthesis and form the base of the food web.

Front

What is the correct flow of energy in a food chain?

Back

Energy flows from producers to primary consumers to secondary consumers (e.g., grass → rabbit → fox).

Front

What happens to the rabbit population if the fox population decreases?

Back

The rabbit population would likely increase due to reduced predation.

Front

Where is the most energy found in an energy pyramid?

Back

The most energy is found at the base of the pyramid, which consists of producers like grasses.

Front

Define a food web.

Back

A food web is a complex network of interconnected food chains showing how energy and nutrients flow through an ecosystem.

Front

What is a consumer in an ecosystem?

Back

Consumers are organisms that obtain energy by eating other organisms, including herbivores, carnivores, and omnivores.

Front

What is the difference between a herbivore and a carnivore?

Back

Herbivores eat plants, while carnivores eat other animals.

Front

What is a decomposer?

Back

Decomposers are organisms, like fungi and bacteria, that break down dead organic material, returning nutrients to the soil.

Front

Explain the concept of energy transfer in an ecosystem.

Back

Energy transfer in an ecosystem occurs when one organism eats another, with energy decreasing at each trophic level.