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Ecosystems
Test Description: Ecosystems
Instructions: Answer all questions to get your test result.
1) What is at the start of every food chain?
A
Consumer
B
Carnivore
C
Decomposer
D
Producer
2) Ospreys are birds that eat fish. Where would an osprey most likely live?
A
Near a forest
B
Near a desert
C
Near a praire
D
Near a marsh (near rivers and oceans)
3) Bacteria have a special role in an ecosystem. What is that role?
A
Scavenger
B
Consumer
C
Producer
D
Decomposer
4) An owl gets its energy from a mouse it eats. From which food source did the mouse most likely get its energy?
A
Grass
B
Soil
C
Sun
D
Deer
5) Why can different types of organisms live together in the wetlands?
A
Animals can move from one part of the wetlands to another depending on size
B
The wetlands provide a wide variety of breeding and growing areas
C
All animals can live in very wet environments
D
The wetlands provide different temperatures for different organisms
6) What type of organism eats only plants?
A
Omnivore
B
Herbivore
C
Carnivore
7) If the predator population decreases, which will most likely happen to the prey population?
A
It will move to another ecosystem
B
It will decrease
C
It will die out
D
It will gradually increase
8) Which would be most negatively affected if plant eating animals became extinct?
A
Producers
B
Consumers
C
Scavengers
D
Decomposers
9) The rabbit population decreases due to a drought. What will happen to the fox population that eats rabbits?
A
The will decrease
B
They will remain the same
C
They will increase
D
They will move to another ecosystem
10) Which most accurately describes an estuary?
A
Freshwater mixes with saltwater to provide a nutrient rich environment
B
animals and plants compete for food due to pollution from surrounding aras
C
High salt levels keep the water clear of nutrients and proteins
D
Freshwater mixes with saltwater to provide a nutrient rich environment
11) Which statement best describes a pond?
A
Cattail and pond lily grow here
B
Evergreen trees grow here
C
Grasses and wildflowers grow here
D
Coral reefs grow here
12) Which best describes a carnivore?
A
A consumer that eats only plants
B
A consumer that eats only meat
C
A consumer that eats both plants and animals
*select an answer for all questions
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