MS-LS2-3

What is a Primary Consumer?

• An organism that produces energy through photosynthesis.

• An organism that eats producers; it is the second trophic level in a food chain.

• An organism that decomposes organic material.

• An organism that feeds on primary consumers.

What is a Secondary Consumer?

• An organism that produces its own food

• An organism that eats primary consumers

• An organism that decomposes organic material

• An organism that is at the top of the food chain

What does the term 'Trophic Level' mean?

• A measure of an organism's size in an ecosystem.

• The position an organism occupies in a food chain, determined by its feeding relationships.

• The total number of species in a given area.

• A classification of organisms based on their reproductive strategies.

What is an example of a Tertiary Consumer?

• A rabbit that eats grass.

• An owl that eats mice.

• A deer that eats leaves.

• A cow that eats hay.

What role do decomposers play in an ecosystem?

• Decomposers break down dead organisms and recycle nutrients back into the soil.

• Decomposers produce energy through photosynthesis.

• Decomposers compete with plants for sunlight and nutrients.

• Decomposers are primary consumers that eat plants.

Why are Producers important in an ecosystem?

• They decompose organic matter and recycle nutrients.

• They provide the energy needed for all other organisms in the ecosystem.

• They compete with consumers for resources.

• They regulate the population of herbivores.

What is a Tertiary Consumer?

• An organism that produces its own food through photosynthesis.

• An organism that eats primary consumers; it is the second trophic level in a food chain.

• An organism that eats secondary consumers; it is the fourth trophic level in a food chain.

• An organism that decomposes organic material; it is the last trophic level in a food chain.

What is an example of a Producer?

• A plant, such as grass or a tree.

• A carnivorous animal, like a lion.

• A decomposer, such as a fungus.

• A mineral, like quartz.

What is an example of a Primary Consumer?

• A rabbit that eats grass.

• A lion that eats meat.

• A tree that absorbs sunlight.

• A cow that eats hay.

What does the 10% Rule in ecology state?

• The 10% Rule states that all energy is passed on to the next trophic level.

• The 10% Rule states that only about 10% of the energy is passed on when energy is transferred from one trophic level to the next.

• The 10% Rule states that energy is lost completely at each trophic level.

• The 10% Rule states that energy is equally distributed among all trophic levels.