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Ecosystems
Test Description: Ecosystem and Food Chain
Instructions: Answer all questions to get your test result.
1) After one species disappears, the other species in the ecosystem
A
are better off without the species
B
are out of balance
C
are unnaffected
D
always decrease in number
2) Which of the following are abiotic factors?
A
grass, temperature, bacteria
B
water, temperature, soil, sunlight
C
water, lions, deer, grasshoppers
D
tigers, pigeons, oak trees
3) Which of the following is a symbiotic relationship where organisms help each other?
A
predation
B
mutualism
C
commensalism
D
parasitism
4) A bird eats a worm. Who is the predator?
A
the worm
B
both
C
neither
D
the bird
5) When is food a limiting factor?
A
food is never a limiting factor
B
when populations are small
C
when a population is large
D
when the amount of food is great
6) A tick feeding on a whitetail deer. What is this an example of?
A
commensalism
B
parasitism
C
environmentalism
D
mutualism
7) Without wolves, a biome could have
A
an abundance of resources
B
too many large animals
C
too many predators
D
too many deer
8) Name a key abiotic factor in rivers.
A
river grasses
B
speed of water
C
mammals
D
fish
9) Herbiovores, carnivores and omnivores are all
A
prey
B
parasites
C
consumers
D
predators
10) On a food web some organisms have arrows pointing toward them, but not away from them
A
this is because they are abiotic factors
B
this is because they are producers
C
this is because they are at the bottom of the food web
D
this is because nothing on the web eats them
11) When is food a limiting factor?
A
None of these
B
When a population is large
C
Food cannot be a limiting factor
D
When a population is small
12) What word describes mammals, fish, birds and plants that live in an environment.
A
Herbivores
B
Biotic
C
Abiotic
D
Consumers
13) Organisms that can make their own food from sunlight are called
A
magicians
B
consumers
C
producers
D
herbiovores
14) What kind of elk do wolves kill?
A
healthy elk
B
young, old, injured and diseased
C
strong elk
D
they donĀ“t kill elk
15) A diagram with arrows showing energy flow from grass, to rabbit, to a fox is a
A
graph
B
food pyramid
C
food web
D
food chain
16) From where does plankton get food
A
taco bell
B
chemicals in their surroundings
C
photosynthesis
D
consuming other organisms
17) How could an abiotic factor limit a population within a forest biome?
A
Rich soil could allow many trees to grow and providing food and shelter for many animals.
B
A flood could kill plants and animals which would limit populations
C
Abiotic factors cannot limit populations in a forest
D
Mountain lions could kill too many rabbits and limit their population
*select an answer for all questions
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