Food Chains, Webs, and Pyramids

What is a carnivore?

• An organism that primarily eats plants.

• An organism that primarily eats other animals.

• An organism that can eat both plants and animals.

• An organism that primarily feeds on fungi.

What is a trophic level?

• A type of ecosystem

• Each step in a food chain or food web, representing a different level of energy transfer.

• A measure of biodiversity

• The total biomass of an area

What is the significance of an energy pyramid?

• It represents the physical structure of an ecosystem.

• It illustrates the amount of energy available at each trophic level in an ecosystem.

• It shows the distribution of species in an ecosystem.

• It indicates the age of the organisms in an ecosystem.

What is a food web?

• A simple chain of organisms that eat one another.

• A complex network of feeding relationships among various organisms in an ecosystem.

• A diagram that shows the energy flow in a single species.

• A list of all the organisms in a particular habitat.

Which of the following is a herbivore: cricket, frog, hawk, shrew?

• Cricket

• Frog

• Hawk

• Shrew

What happens to energy as it moves up the food chain?

• Energy increases as it moves up the food chain.

• Energy remains constant as it moves up the food chain.

• Energy decreases as it moves up the food chain due to energy loss at each trophic level.

• Energy is completely transferred to the next level without loss.

What is a primary consumer?

• An organism that eats producers; typically herbivores.

• An organism that produces its own food through photosynthesis.

• An organism that decomposes organic material.

• An organism that feeds on primary consumers.

What shows one possible flow of energy in an ecosystem?

• Food web

• Food chain

• Energy cycle

• Nutrient cycle

What is the role of producers in a food chain?

• Producers convert sunlight into energy through photosynthesis, forming the base of the food chain.

• Producers consume other organisms for energy and nutrients.

• Producers decompose organic matter and recycle nutrients back into the soil.

• Producers are organisms that rely on consumers for their energy needs.

What is an organism that makes its own food called?

• Consumer

• Decomposer

• Producer

• Herbivore