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1. 
relationship in which two species live closely together
A.
resource
B.
mutualism
C.
succession
D.
symbiosis
2. 
A living relationship between two species in which one organism is harmed is called...
A.
mutualism
B.
parasitism
C.
commensalism
D.
niche
3. 
anything that an organism needs to live, ex. food, water, space
A.
carrying capacity
B.
resource
C.
succession
D.
denitrification
4. 
symbiotic relationship in which one organisms benefits and the other organism is not affected
A.
invasive (non-native) species
B.
mutualism
C.
Nitrogen
D.
commensalism
5. 
symbiotic relationship in which both organisms benefit
A.
Competition
B.
Nitrogen Fixation
C.
Mutualism
D.
Energy Pyramid
6. 
A clownfish uses a sea anenome as a safe place to live. While living there, the clownfish lures in food for the anenome. This is an example of what type of relationship?
A.
Predator-Prey
B.
Mutualism
C.
Commensalism
D.
Parasitism
7. 
This is known as a relationship in which both organisms involved benefit.
A.
Predator-Prey
B.
Commensalism
C.
Mutualism
D.
Decomposition
8. 
A feeder fish usually follows behind sharks to pick up food scraps that they leave behind. The fish gets food and the shark is unaffected. This is an example of:
A.
Mutualism
B.
Commensalism
C.
Decomposition
D.
Parasitism
9. 
A symbiotic relationship that involves species having to fight for something they both need or want
A.
Competition
B.
Predation
C.
Commensalism
D.
Par
10. 
How many primary consumers are there in this food web?
A.
1
B.
2
C.
3
D.
4
11. 
Barnacles create home sites by attaching themselves to whales. This neither harms nor benefits the whales. What kind of relationship is this?
A.
Mutualism
B.
Commensalism
C.
Parasitism
D.
Competition
12. 
What type of symbiosis is this? *Hermit crabs find shells left by snails that have died and move in. * Snails die and leave behind their shells.
A.
Commensalism
B.
Mutualism
C.
Parasitism
D.
Predation
13. 
The crocodile and bird have a _______________ relationship. The crocodile benefits by having its teeth cleaned. The bird benefits by gaining food and protection. Both animals benefit from this relationship.
A.
Parasitism
B.
Predator and prey
C.
Mutualism
D.
Commensalism
14. 
A frog eats a fly. The frog and fly are demonstrating ________.
A.
Mutualism
B.
Competition
C.
Parasitism
D.
Predator/Prey
15. 
A tapeworm inside a dog is
A.
Competition
B.
Predation
C.
Commensalism
D.
Parasitism
16. 
Plants both trying to get sunlight are
A.
Competition
B.
Commensalism
C.
Mutualism
D.
Parasitism
17. 
How many herbivores are in this web?
A.
3
B.
1
C.
2
D.
4
18. 
Where do decomposers go in your food chain?
A.
at every level
B.
at the beginning
C.
at the end
D.
they don't belong in a food chain
19. 
symbiotic relationship in which one organism benefits and the other organism is harmed
A.
secondary succession
B.
predation
C.
pioneer species
D.
parasitism
20. 
a relationship between two in which one species feeds on the other species.
A.
chemosynthesis
B.
predation
C.
cellular respiration
D.
commensalism
21. 
This is an example of what camoflauge?
A.
mimicry
B.
blending
C.
costume
22. 
The walkingstick uses what type of camouflage..
A.
sticks
B.
color changing
C.
mimicry
D.
patterns
23. 
What is the phytoplankton (floats in the water) AND seaweed (attached to the ocean bottom) competing for?
A.
food source resources
B.
habitat (living space)
C.
food and habitat (living space0
D.
water, detritous (nutrients), and liht
24. 
A volcanic eruption occurs thousands of miles away but sends ash to cover the area blocking light from the sun a little bit. The light can still reach the water in large amounts, but is less able to reach all the way to the ocean bottom. What species is more able to get the light resource?
A.
seaweed
B.
phytoplankton
25. 
What will happen to the phytoplankton population AND seaweed population due to this volcanic eruption that blocks light in the atmosphere.
A.
phytoplankton and seaweed population increases
B.
phytoplankton and seaweed population decreases
C.
phytoplankton population is unaffected. Seaweed population decreases
26. 
If the seaweed population decreases then...
A.
Crab population decreases
B.
Crab population increases
C.
Crab population is unaffected
27. 
If the seaweed population decreases then...
A.
Squid population decreases
B.
squid population increases
C.
Squid population is unaffected
28. 
If the seaweed population decreases then...
A.
penguin population decreases
B.
penquin population increases
C.
penguin population is unaffected
29. 
If the seaweed population decreases then...
A.
killer whale population decreases
B.
killer whale population increases
C.
killer whale population is unaffected
30. 
A disease strikes the leopard seal. This causes the leopard seal population to...
A.
increase
B.
decrease
C.
unaffected
31. 
A disease strikes the leopard seal. The population of the leopard seal decreases. What happens to the population of the penguin
A.
increase
B.
decrease
C.
unaffected
32. 
A disease strikes the leopard seal. The population of the leopard seal decreases. What happens to the population of the killer whale
A.
increase
B.
decrease
C.
unaffected
33. 
A disease strikes the leopard seal. The population of the leopard seal decreases. What happens to the population of the fish
A.
increase
B.
decrease
C.
unaffected
34. 
A disease strikes the leopard seal. The population of the leopard seal decreases. What happens to the population of the krill
A.
increase
B.
decrease
C.
unaffected
35. 
A disease strikes the leopard seal. The population of the leopard seal decreases. What happens to the population of the blue whale
A.
increase
B.
decrease
C.
unaffected
36. 
Changes in the amount of a resource results in changes in the population of...
A.
All the species in the ecosystem
B.
Most the species in the ecosystem
C.
Some of the species in the ecosystem
D.
A single species
37. 
When resources are scarce (in low supply) then competition between species...
A.
increases
B.
decreases
C.
unaffected
38. 
Which organism is in a predator relationship with the penguin?
A.
blue whale
B.
leopard seal
C.
squid
D.
elephant seal
39. 
Which organism is in a competitive relationship with the penguin?
A.
blue whale
B.
leopard seal
C.
squid
D.
elephant seal
40. 
Which organism is in a prey relationship with the penguin?
A.
blue whale
B.
leopard seal
C.
squid
D.
elephant seal
41. 
Which species is in a predator relationship with the krill?
A.
blue whale
B.
zooplankton
C.
phytoplankton
D.
squid
42. 
Which species is in a competition relationship with the krill?
A.
blue whale
B.
zooplankton
C.
phytoplankton
D.
squid
43. 
Which species is in a similar relationship to a prey relationship with the krill?
A.
blue whale
B.
zooplankton
C.
phytoplankton
D.
squid
44. 
The krill are competing with the zooplankton for...
A.
food source
B.
habitat
C.
light and water
D.
food and habitat
45. 
The krill population decreases. This causes their competition (zooplankton) to...
A.
Increase
B.
Decrease
C.
Unaffeceted
46. 
The krill population decreases. This causes the leopard seal to FIRST do what? Careful...follow the food chain
A.
increase
B.
decrease
C.
unaffected
47. 
What, if anything, is the seaweed competing with?
A.
crab
B.
zooplankton
C.
phytoplankton
D.
nothing
48. 
The krill population decreases. This causes the elephant (not leopard) seal to FIRST do what? Careful...follow the food chain
A.
increase
B.
decrease
C.
unaffected