Exploring Animal Diets and Feeding Strategies

What defines an animal as an ingestive heterotroph?

• It absorbs nutrients directly from the soil.

• It filters nutrients from water.

• It creates its own food from sunlight.

• It consumes other organisms for nutrients.

What percentage of animals are carnivores, according to a 2019 study?

• 63%

• 32%

• 3%

• 2%

Which adaptation is NOT associated with herbivory?

• Specialized gut bacteria for breaking down plant walls.

• Baleens for filtering tiny food particles.

• Gizzards for digesting tough cellulose.

• Flat teeth for grinding plants.

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How do carnivores typically extract nutrients from their food?

• By photosynthesis.

• By quickly pushing food through their intestines.

• By grinding up plants.

• By filtering water.

Why might an animal evolve to eat wood, despite its low nutritional value?

• Wood is easy to digest.

• Wood contains high levels of protein.

• It allows access to a unique food source.

• Wood is abundant and easy to find.

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What is a key feature of filter-feeders?

• They hunt specific prey.

• They consume large animals.

• They trap tiny food particles in water or air.

• They chew and re-chew their food.

Which of the following is NOT a mode of feeding discussed?

• Parasitism

• Carnivory

• Photosynthesis

• Scavenging

Which statement best describes the sea lamprey's impact on the Great Lakes ecosystem?

• It acts more like a predator than a parasite.

• It improves the water quality.

• It has a negligible effect.

• It promotes biodiversity.

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What is the primary diet of a sea lamprey in the Great Lakes?

• Wood and bone.

• Tiny plants and microbes.

• Nutrient-rich fish blood.

• Decaying plants and animals.

What unique strategy do eyelash mites use to excrete waste?

• They excrete waste through their cell membranes.

• They use a specialized excretory system.

• They store waste in their bodies until they die.

• They excrete waste continuously.