5.3 Quiz Review 22

What term describes the regulation of populations of organisms at lower trophic levels by predators at the top of the food chain?

• Trophic Cascades

• Biomagnification

• Nutrient Cycling

• Ecological Succession

What is an omnivore?

• An animal that eats only plants.

• An animal that eats only animals.

• An animal that eats both plants and animals.

• An animal that eats neither plants nor animals.

What is a producer in an ecosystem?

• An organism that can make its own food, typically through photosynthesis.

• An organism that consumes other organisms for energy.

• An organism that decomposes organic material.

• An organism that relies on external sources for food.

What are invasive species?

• Native species that thrive in their natural habitat.

• Non-native species that spread widely in a new habitat and can cause harm to the ecosystem.

• Species that are endangered and require protection.

• Species that are beneficial to the ecosystem and promote biodiversity.

When going up a trophic level, about what percentage of energy is passed on from the previous level?

• 5%

• 10%

• 15%

• 20%

What role do decomposers play in an ecosystem?

• They produce energy through photosynthesis.

• They break down dead organic matter, returning nutrients to the soil.

• They compete with plants for sunlight and water.

• They are primary consumers that eat plants.

What is the difference between a food chain and a food web?

• A food chain is a linear sequence of organisms, while a food web is a complex network of interconnected food chains.

• A food chain includes only plants, while a food web includes animals only.

• A food chain is a complex network of organisms, while a food web is a simple sequence.

• A food chain is a type of food web that only includes herbivores.

What is a herbivore?

• An animal that eats only plants.

• An animal that eats both plants and meat.

• An animal that primarily eats insects.

• An animal that feeds on detritus.

What is the ultimate original source of energy for living things?

• Moon

• Sun

• Earth

• Stars

What is an animal that eats only other animals called?

• Herbivore

• Omnivore

• Carnivore

• Detritivore