Trophic Levels and Food Webs

Front

What is a trophic level?

Back

A trophic level is a position in a food chain or food web that indicates the flow of energy and nutrients through an ecosystem, typically categorized as producers, primary consumers, secondary consumers, and tertiary consumers.

Front

Define producer in an ecosystem.

Back

A producer is an organism that can make its own food through photosynthesis or chemosynthesis, serving as the base of the food chain (e.g., plants, algae).

Front

What is a primary consumer?

Back

A primary consumer is an organism that eats producers (plants) for energy, typically herbivores (e.g., rabbits, deer).

Front

What role do secondary consumers play in a food web?

Back

Secondary consumers are organisms that eat primary consumers for energy, often carnivores or omnivores (e.g., snakes, some birds).

Front

What is a tertiary consumer?

Back

A tertiary consumer is an organism that eats secondary consumers, often at the top of the food chain (e.g., hawks, lions).

Front

What is a food web?

Back

A food web is a complex network of interconnected food chains in an ecosystem, illustrating how energy and nutrients flow between different organisms.

Front

Explain the term 'decomposer'.

Back

A decomposer is an organism that breaks down dead organic material, returning nutrients to the soil (e.g., fungi, bacteria).

Front

What is the difference between herbivores and carnivores?

Back

Herbivores are animals that primarily eat plants, while carnivores are animals that primarily eat other animals.

Front

Give an example of an omnivore.

Back

An omnivore is an organism that eats both plants and animals (e.g., humans, bears).

Front

How do energy pyramids relate to trophic levels?

Back

Energy pyramids illustrate the amount of energy available at each trophic level, showing that energy decreases as it moves up the pyramid from producers to top consumers.