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Ecosystems
Test Description: 5.L.2
Instructions: Answer all questions to get your test result.
1) What is the difference between biotic and abiotic factors?
A
a biotic factor is found on land and an abiotic factor is found in water
B
biotic factors are animals and abiotic factors are plants
C
biotic factors are living and abiotic factors nonliving
D
biotic factors are nonliving and abiotic factors are living
2) Why are there different kinds of consumers?
A
because they live different places
B
because they eat different things
C
because they are different sizes and shapes
D
because some are plants and some are animals
3) In which biome do things decompose the fastest?
A
grassland
B
tropical rain forest
C
taiga
D
desert
4) Which is an example of the job of a decomposer?
A
to be prey for a top predator
B
to provide energy for an herbivore
C
to recycle dead trees by adding their nutrients to the soil
D
to make food from the sun's energy
5) A snake gets its energy by eating a mouse. Where did the mouse MOST likely get his energy?
A
from the sun
B
from another mouse
C
from grass
D
from the soil
6) What makes an estuary different than the ocean?
A
the amount of salt
B
the amount of plants
C
the amount of animals
D
the amount of sunlight
7) Which lists organisms that would live in the deciduous forest?
A
parrots and monkeys
B
moose and elk
C
prairie dog and bison
D
bears, deer, squirrels
8) Which of the following organisms is a producer?
A
fish
B
fungus
C
spider
D
sunflower
9) Which of the following organisms is a primary consumer?
A
grasshopper
B
human
C
coyote
D
shark
10) In a desert ecosystem, which organism has the MOST available energy?
A
scorpion
B
cactus
C
vulture
D
jackrabbit
11) What would happen if the the flower was removed from the rain forest food chain that follows? Flower-butterfly-toucan-jaguar
A
the number of toucans would decrease
B
the number of butterflies would decrease
C
the number of butterflies would increase
D
the number of toucans would increase
12) In the estuary ecosystem, which organism has the LEAST available energy?
A
fish
B
algae
C
crabs
D
the Heron
13) In a food chain, an arrow is drawn from a grasshopper to a bird. What does this mean?
A
the grasshopper eats the bird
B
the energy is flowing from the bird to the grasshopper
C
the energy is flowing from the grasshopper to the bird
D
the bird eats the grasshopper
14) Which type of animal usually eats both producers and consumers?
A
an omnivore
B
a predator
C
an herbivore
D
a carnivore
15) Which has the greatest effect on the amount of salt in a salt marsh/estuary?
A
the number of animals living in the marsh/estuary
B
the closeness of the marsh/estuary to the ocean
C
the depth of the water in the marsh/estuary
D
the temperature of the water in the marsh/estuary
16) Which classification best describes herbivores?
A
predators
B
consumers
C
producers
D
decomposers
17) What will be most affected if the decomposers in an ecosystem are removed?
A
the quality of the soil
B
the availability of water
C
the distribution of organisms
D
the spread of disease
18) This is a food chain that includes grass, a grasshopper, and a bird. grass → grasshopper → bird. How is the grass in this food chain BEST described?
A
It is a producer, because it is eaten by consumers.
B
It is a decomposer, because it breaks down sunlight
C
It is a consumer, because it gets energy from producer
D
It is a producer, because it makes its own food.
19) Which would most likely cause a decrease in a population of herbivores?
A
a decrease in the number of decomposers
B
an increase in the number of producers
C
an increase in the number of carnivores
D
an increase in the types of plants
20) What would most likely happen if all of the decomposers in an ecosystem were removed?
A
The plants in the ecosystem would eventually die because of a lack of nutrients in the soil.
B
The animals in the ecosystem would die because of the spread of disease
C
The plants in the ecosystem would begin to die out because of a decrease in available water.
D
The animals in the ecosystem would eat other types of food because of a decrease in producers.
*select an answer for all questions
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