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- 1. Multiple Choice
Which of the following is an example of a population within an ecosystem?
the gray wolves in a forest
the rocks in a rock collection
the bushes and grasses in a park
the cats and dogs in your neighborhood
- 2. Multiple Choice
All of the following are biotic factors in an ecosystem EXCEPT ____________.
a fish because it can swim
sunlight because it has never been alive
sea grass because it makes its own food
an alligator because it eats smaller animals
- 3. Multiple Choice
Which of the following is an abiotic factor?
algae because it grows on rocks
plants because they grow in soil
water because it has never been alive
a dead deer because bacteria feeds on it
- 4. Multiple Choice
All of the following are examples of a community EXCEPT
cacti, lizards, and snakes in a desert
polar bears, seals, and walruses in a polar region
water, sunlight, fish, turtles, and ducks in a pond
pine trees, rabbits, squirrels, and red foxes in a forest
- 5. Multiple Choice
Which of the following most accurately describes a producer?
bees because they make honey
herbivores because they eat plants
an oak tree because it produces acorns
lily pads because they produce their own food
- 6. Multiple Choice
Based on the food web, the herbivores provide energy for which consumers?
mountain lion, insect - eating bird, snake, shrew, and hawk
grasshopper, squirrel, rabbit, and deer
shrub, tree, grass, fungi, and bacteria
mountain lion, snake, insect- eating bird, and deer
- 7. Multiple Choice
As you move from level to level in an energy pyramid, energy availability _____________.
increases
decreases
stays the same
is destroyed
- 8. Multiple Choice
The tundra is an example of a _____________ because the land that it covers has similar climates and vegetation.
biome
ecosystem
habitat
environment
- 9. Multiple Choice
Mussels, sea urchins, and crabs are eaten by sea otters. Kelp is eaten by sea urchins and mussels. Mussels and small fish are eaten by crab. Which graphical representation would be used to display this information?
food web
food pyarmid
energy pyramid
food chain
- 10. Multiple Choice
What do the arrows in a food web represent?
the level of organization within an ecosystem
how much energy each organism receives
the type of consumer the organism is
who eats what or whom
- 11. Multiple Choice
Earthworms tunnel through the ground, eating, and loosening, and enriching the soil. These worms are eaten by robins. This is a description of the worm's
habitat
community
niche
biome
- 12. Multiple Choice
An ecosystem differs from a community because an ecosystem includes
biotic and abiotic factors
biotic factors but not abiotic factors
abiotic factors but not biotic factors
neither abiotic or biotic factors
- 13. Multiple Choice
In the diagram, which of the following is a consumer?
rabbit
snake
mouse
all of the above
- 14. Multiple Choice
What is missing from the diagram?
a decomposer
a producer
a scavenger
none of the above
- 15. Multiple Choice
In the diagram, the original source of energy is the
grass
hawk
sun
none of the above
- 16. Multiple Choice
What would happen to the mouse population if all the rabbits died?
the hawk population would increase
the snake population would increase
the mouse population would decrease
the grass population would decrease
- 17. Multiple Choice
Which of the following correctly shows the organization in an ecosystem, from simplest to most complex?
community, ecosystem, organism, population
ecosystem, community, population, organism
organism, population, community, ecosystem
population, community, ecosystem, organism
- 18. Multiple Choice
A bird stalks, kills, and then eats an insect. Based on its behavior, which pair of ecological terms describes the bird?
herbivore and decomposer
producer and plant
carnivore and consumer
consumer and herbivore
- 19. Multiple Choice
How would you label the robin in the food chain below?
oak tree --> caterpillar --> robin --> hawk
producer
secondary consumer
primary consumer
herbivore
- 20. Multiple Choice
Which statement is accurate about the transfer of energy up to higher trophic levels in an energy pyarmid?
producers pass 90% of their energy to consumers
100% of the energy is passed from each tropic level to the next
10% of the energy from a trophic level is passed to the next trophic level
a top level consumer receives 10% of the energy from the first level
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