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- 1. Multiple Choice
Which is an example of a decomposer?
a hawk
a mouse
a flower
a mushroom
- 2. Multiple Choice
In a food chain, the sun provides energy for an apple tree to grow. A deer eats an apple from the tree. Which is a consumer?
the tree
the apple
the sun
the deer
- 3. Multiple Choice
An ecosystem is a community of organisms interacting with their physical environment. Why are decomposers an important part of ecosystems?
They break down dead organisms to return nutrients to the soil.
They produce their own food for survival.
They play a role in preventing weathering and erosion.
They provide most of the energy to consumers.
- 4. Multiple Choice
Which best describes a producer?
an organism that gets its energy from plants
a plant that makes its own food
the sun because it provides energy for plants
an organism that gets its energy from animals
- 5. Multiple ChoiceTyler is classifying organisms according to their source of energy. Based on the food chain pictured, which organism would be considered a carnivore?antbirdmaple leaf
- 6. Multiple ChoiceWhat best describes the roles of the organisms pictured in order from left to right?consumer, producer, consumerproducer, decomposer, consumerconsumer, decomposer, consumer
- 7. Multiple Choice
In which category are all living things most directly dependent upon the sun for energy?
carnivores
producers
herbivores
decomposers
- 8. Multiple Choice
Which best describes how decomposers help support life in an ecosystem?
Decomposers add nutrients to the soil.
Decomposers provide a habitat in the ecosystem.
Decomposers add producers to the ecosystem.
Decomposers provide energy for consumers.
- 9. Multiple Choice
Which will most likely cause a decrease in predator populations?
an increase in prey populations
a decrease in prey populations
a decrease in decomposers
an increase in producers
- 10. Multiple Choice
Bacteria are released into the Gulf of Mexico to help clean up an oil spill. What role do the bacteria serve in the marine ecosystem?
decomposers
consumers
producers
predators
- 11. Multiple Choice
In which way are decomposers a benefit to the environment?
They produce oxygen that animals need to survive.
They make their own food through the process of photosynthesis.
They prevent fungi and bacteria from causing diseases in plants.
They make soil more fertile by breaking down dead plants and animals.
- 12. Multiple Choice
In the food web, which organisms are producers?
frog and rat
rat and leaves
leaves and berries
- 13. Multiple Choice
Which is most responsible for recycling dead plants and animals in an ecosystem?
water
bacteria
fish
insects
- 14. Multiple Choice
Which organism is a producer?
frog
mushroom
grass
lizard
- 15. Multiple Choice
Which group of organisms are consumers?
bacteria, fungi, and mushrooms
cactus, fern, and maple tree
deer, rabbit, and squirrel
moss, protist, and algae
- 16. Multiple Choice
In which category are all living things most directly dependent upon the sun for energy?
carnivores
producers
herbivores
decomposers
- 17. Multiple Choice
Which organism provides oxygen and food in an ecosystem?
algae
fungi
protists
bacteria
- 18. Multiple Choice
A crow eats the remains of a dead animal. What type of consumer does this prove the crow to be?
a decomposer
a herbivore
a predator
a scavenger
- 19. Multiple Choice
Which type of organism eats only plants?
carnivore
herbivore
producer
scavenger
- 20. Multiple Choice
Which describes a consumer?
an organism that produces its own food
an organism that produces its own energy
an organism that cannot produce its own food
an organism that releases energy to other organisms
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