Chapter 22 Practice Test
Name______________________________Mod____________
1. Which of these is a producer?
A. zebra
B. lion
C. mushroom
D. sun
E. grass
2. What is another name for producer?
A. heterotroph
B. decomposer
C. autotroph
D. detritivore
E. consumer
3. What is photosynthesis?
A. animals that are heterotrophs
B. when autotrophs create carbohydrates from solar energy
C. when decomposers break molecules down into nutrients
D. when trophic level energy is transferred
4. A detritivore is an animal that:
A. feeds on both producers and consumers
B. feeds on the “garbage” of the ecosystem
C. converts biomass into”garbage” in an ecosystem
D. produces carbohydrates by using energy from inorganic molecules
E. use photosynthesis to create carbohydrates from the sun
5. Which of these biomes receives the most precipitation?
A. Tropical rainforest
B. taigo/coniferous forest
C. temperate grasslands
D. tundra/polar
E. savanna
6. Which of these is an omnivore?
A. zebra
B. grass
C. mushroom
D. bear
E. lion

7. Which biome has the richest soil and therefore is good for crops?
A. Temperate deciduous forest
B. tundra/polar
C. temperate grasslands
D. Taiga/coniferous forest
E. savanna
7. Why are there always more producers than consumers in an ecosystem?
8. Why are the trees in the taiga/coniferous forest not cut down to make room for
farmland as often as deciduous forests? Be specific.
9. What are two ways autotrophs can produce energy (carbohydrates)? Name the
processes.
10. Which biome is likely to have the most biomass available? Explain your answer
specifically.
11. Is a mushroom a producer, consumer or decomposer? Why? Explain specifically.
How do producers benefit directly from the work of decomposers?

What’s the difference between a detritivore and a decomposer?