5.2 Food Webs Quiz

What is a producer?

• Organism that makes its own energy

• Organism that breaks down dead organisms

• Organism that eats other organisms for food & energy

Answer explanation

A producer is an organism that makes its own energy, typically through photosynthesis, as seen in plants. This distinguishes them from decomposers, which break down dead organisms, and consumers, which eat other organisms.

What is an omnivore?

• An organism that only eats plants for energy

• An organism that eats animals for energy

• An organism that eats both plants and animals for energy.

Answer explanation

An omnivore is defined as an organism that eats both plants and animals for energy. This distinguishes them from herbivores, which only eat plants, and carnivores, which only eat animals.

What is a carnivore?

• An organism that only eats plants for energy

• An organism that eats animals for energy

• An organism that eats both plants and animals for energy.

Answer explanation

A carnivore is defined as an organism that primarily consumes animals for energy. This distinguishes it from herbivores, which eat plants, and omnivores, which eat both plants and animals.

What is an herbivore?

• An organism that only eats plants for energy

• An organism that eats animals for energy

• An organism that eats both plants and animals for energy.

Answer explanation

An herbivore is defined as an organism that exclusively consumes plants for energy. This distinguishes them from carnivores, which eat animals, and omnivores, which eat both plants and animals.

What is a consumer?

• Organism that makes its own energy

• Organism that breaks down dead organisms

• Organism that eats other organisms for food & energy

Answer explanation

A consumer is an organism that obtains energy by eating other organisms. This distinguishes it from producers, which make their own energy, and decomposers, which break down dead matter. Thus, the correct choice is the one that describes consumers.

The ___% rule states that only ____% of energy is transferred to the next trophic level.

• 10%

• 25%

• 50%

• 100%

Answer explanation

The 10% rule indicates that only about 10% of the energy from one trophic level is transferred to the next. This is due to energy loss through metabolic processes, making 10% the correct answer.

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What are "trophic levels"?

• Levels in a food web/food chain

• Levels of land in a mountain

• Animal diets

Answer explanation

Trophic levels refer to the different stages in a food web or food chain, indicating the position of organisms based on their feeding relationships. The correct choice highlights this concept accurately.

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Fungi: Producer, consumer or decomposer?

• Producer

• Consumer

• Decomposer

Answer explanation

Fungi are primarily decomposers, breaking down organic matter and recycling nutrients back into the ecosystem. They play a crucial role in decomposition, unlike producers (plants) or consumers (animals).

Grass: Producer, consumer or decomposer?

• Producer

• Consumer

• Decomposer

Answer explanation

Grass is a producer because it performs photosynthesis, converting sunlight into energy and creating organic matter. Producers form the base of the food chain, supporting consumers and decomposers.

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Who is the first level consumer in this food chain?

• wolf

• mushroom

• arctic moss

• caribou

Answer explanation

In a food chain, the first level consumer is typically a herbivore. The caribou, which feeds on plants like arctic moss, is a primary consumer, while the wolf is a predator and the mushroom is a decomposer.

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