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WorksheetsPredation, Competition, & Invasive Species
Total questions: 9
Worksheet time: 5mins
Name
Class
Date
1.
What is an invasive species?
a)
A native (naturally found) species which are added to an area.
b)
A non-native (not naturally found) species added to an area.
c)
A keystone species in an environment
d)
none of the above
2.
Invasive species alter the ecosystem by ___________in number quickly,this leads to _____ food for the native species.
a)
increasing less
b)
decline decreasing
3.
Invasive species grow quickly due to the lack of predators, this leads to a decline or extinction of the native population. True or false?
a)
false
b)
true
4.
A species that is not native to an area is called:
a)
Native Species
b)
Natural Species
c)
Invasive Species
d)
Symbiotic Species
5.
Why do the populations of invasive species grow so quickly?
a)
Invasive Species are native to an area.
b)
Invasive species are prey to many animals.
c)
Invasive species have no predators.
d)
Invasive species keep the ecosystems in equilibrium.
6.
One organism hunts and eats another organism.
a)
predation
b)
mutualism
c)
carnivore
d)
parasitism
7.
A 3-point buck is killed by a hunter. What type of symbiotic relationship is this?
a)
mutualism
b)
commensalism
c)
parasitism
d)
predation
8.
In predation, what is the ratio of predators to prey?
a)
1 to 2
b)
2 to 2
c)
1 to 3
d)
1 to 1
9.
In competition, what is the ratio of predator to prey?
a)
1 to 1
b)
1 to 2
c)
2 or more to 1
d)
less than 2 to 1
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