Food Chains and Webs - Quiz

1. Which statement best describes the word "autotroph"?

• An organism that generates its own food
• An organism that consumes other organisms to get energy
• An organism that requires no intake of energy
• An organism that can carry out photosynthesis and chemosynthesis

2. Which statement best describes the word "heterotroph"?

• An organism that generates its own food
• An organism that can hunt and prey on other organisms
• An organism that requires a variety of energy sources
• An organism that consumes other organisms to get energy

3. Which statement best describes the word "decomposer"?

• An organism that decays over time
• An organism that kills living things
• An organism that consumes other organisms to get energy
• An organism that breaks down dead organisms and organic matter

4. "Only __% of energy stored as biomass in one trophic level ends up as biomass in the next trophic level." What is the missing number in this statement? Give your answer as digits (not words), with no period at the end, e.g. 37

5. What is the name of this type of diagram?

• Food chain
• Food web
• Food pyramid
• Energy pyramid

6. How many trophic levels are shown in the diagram? Give your answer as a digit with no period at the end.

7. How many primary consumers are shown in the diagram? Give your answer as a digit with no period at the end.

8. What do the arrows show?

• The amount of biomass at each trophic level
• The flow or transfer of energy
• The weaker to the stronger animal
• The amount of food consumer

9. Which of these food chains is incorrect (according to the diagram)?

• Stargrass --> Thompson's Gazelle --> Lion
• Acacia --> Termite
• Acacia --> Giraffe --> Wild Dog
• Stargrass --> Wildebeest --> Cheetah

10. Energy is lost between each trophic level, limiting the length of food chains. How is most energy lost?

• By heat loss, generated during cellular respiration

• By some organisms not getting eaten
• By not consuming or digesting all of the organism, e.g. bones