Trophic Levels and Energy Pyramids

Multiple Choice

What is the main difference between carnivores and herbivores?

• Carnivores are bigger

• Herbivores eat plants, carnivores eat meat

• Carnivores can run faster

Multiple Choice

Organisms that produce their own food mostly through photosynthesis (producers). Examples are plants and algae.

• Heterotroph

• Autotroph

Multiple Choice

Scavengers are important to ecosystems because they:

• Produce their own food

• Help break down dead organisms

• Are the primary consumers

Multiple Choice

What is the main concept illustrated in the diagram regarding organisms and trophic levels?

• Organisms can occupy only one trophic level

• Organisms can occupy more than one trophic level depending on what it eats

• Trophic levels are fixed for each organism

Multiple Choice

How do decomposers benefit the carbon cycle?

• Dead organic matter is broken down and nitrogen is released into the air.
• Decaying organisms are essential for carbon to be released back into the food web.
• Volcanoes and fires vent large amounts of carbon dioxide into the sky.

Multiple Select

What are some examples of harmful chemicals that contribute to pollution?

• PCBs

• mercury

• sulfur dioxide

Multiple Choice

What are the potential risks of consuming seafood high in mercury for pregnant women?

• It can harm a developing baby

• It has no effect on the baby

• It can improve the baby's health

Reorder

Put in order from MOST to LEAST amount of energy.

• Producer

• Primary consumer

• Secondary consumer

• Tertiary consumer

• Apex predator

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