Exploring Energy Transfer in Trophic Levels

What type of organisms are known to produce their own food using sunlight?

• Autotrophs

• Herbivores

• Decomposers

• Carnivores

Which bacteria are capable of creating organic molecules without sunlight?

• Eubacteria

• Archaebacteria

• Chemosynthetic bacteria

• Photosynthetic bacteria

What do herbivores primarily consume?

• Decomposing organic matter

• Meat

• Both plants and meat

• Plants

Which type of consumer eats both plants and animals?

• Carnivores

• Omnivores

• Herbivores

• Decomposers

What is the role of decomposers in an ecosystem?

• They produce their own food

• They consume live plants

• They only consume meat

• They break down dead organisms

What does a food chain represent?

• The lifecycle of a single species

• A single pathway of energy transfer through feeding relationships

• The decomposition process

• A complex network of all feeding relationships

What is a food web?

• A method of decomposing organic matter

• A single pathway of energy transfer

• A cycle of energy renewal

• Interrelated food chains in an ecosystem

How much energy is typically transferred from one trophic level to the next?

• About 25%

• About 50%

• About 10%

• About 75%

Why are there fewer organisms at the top of the energy pyramid?

• There is more competition

• There is less energy available

• They are larger in size

• They reproduce more slowly

Which organisms are at the base of the energy pyramid?

• Decomposers

• Producers

• Herbivores

• Carnivores