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WorksheetsInvasive Species
Total questions: 20
Worksheet time: 17mins
Name
Class
Date
1.
Biodiversity refers to
a)
extinct species
b)
the variety of species on Earth
c)
nonrenewable resources
d)
the rate of species decline
2.
When taken to a new habitat, non-native plants often threaten native plants of the new habitat. Why do they do this?
a)
Non-native plants are able to mutate rapidly
b)
Non-native plants cause native animals to relocate
c)
Non-native plants are able to be used for medicine
d)
Non-native plants compete with native plants for resources
3.
What effect will an invasive species have on the carrying capacity of an ecosystem?
a)
The carrying capacity will increase
b)
The carrying capacity for everyone will decrease
c)
The carrying capacity will only decrease for those in competition for same resource
d)
The carrying capacity for all animals will stay the same
4.
Kudzu has overgrown many parts of southern Missouri and native ground plants have disappeared from the area. This is an example of:
a)
Parasitism between kudzu and the native plants
b)
A predator prey relationship between ground plants and kudzu
c)
Competition occurring between the native and invasive species
d)
Commesalism occurring between the kudzo and native plants
5.
The field mouse population in Australia has grown so fast that they eat an average of $4 billion of wheat every year. Their fast growth is caused by:
a)
A. The mice like to reproduce
b)
B. A lack of a native species to eat the field mouse
c)
C. Abundant food supply
d)
Both B and C
6.
How did the zebra mussels end up in the Great Lakes?
a)
In ballast tanks of ships
b)
They were intentionally released
c)
They have always been in the Great Lakes
d)
That's not a zebra mussel
7.
These were released in Australia to eat cane beetles, but now they are an invasive species and number in the millions.
a)
dingo
b)
Kangaroo
c)
Cane toad
d)
Rabbits
8.
1. What makes a species invasive?
a)
Moving to a new ecosystem and taking resources from natives
b)
Not having papers
c)
Species that can't adapt
d)
Plants that take up too much space
9.
What kind of organisms can become invasive?
a)
Lions, Tigers, Bears
b)
Plants, Animals, or Pathogens
c)
Animals
d)
Plants
10.
If a blue catfish is introduced and eats the large fish who eat the smaller fish, what will happen to the population of the smaller fish?
a)
Increase
b)
Decrease
c)
Stay the same
d)
No affect on smaller fish
11.
Which of the following is a key characteristic of most invasive species?
a)
Ability to breathe in the air & in the water
b)
Large, sharp teeth
c)
Produce many offspring
d)
Is a top predator
12.
What is a native specie?
a)
A specie that is local and has lived in the same place
b)
A specie who has come from another state or country
c)
A specie that has no "home" and travels for its whole life
d)
None of the above
13.
The lack of natural predators makes populations of invasive species unmanageable?
a)
True
b)
False
14.
A population of an organism will only grow exponentially if:
a)
The resources are unlimited
b)
They want to
c)
The resources are limited
d)
They do not like to compete
15.
Species that are indigenous to an area with no human intervention
a)
invasive species
b)
native species
c)
all species that live in an ecosystem
16.
Invasive species have a negative impact on...
a)
the ecosystem
b)
the economy
c)
Both the ecosystem and the economy
d)
None of these
17.
What do invasive species do to the habitat they move into? (paragraph 2)
a)
crowd out local plants and animals
b)
eat all the mice and deer
c)
create a food chain
18.
What's one EFFECT of pythons invading the Everglades?
a)
the number of small mammals, like mice, are decreasing
b)
the number of white-tailed deer is increasing
c)
pythons can grow to be 18 feet long
19.
What's one problem with the pythons gobbling up all the small animals in the Everglades park? (paragraph 4)
a)
other animals can't find any food
b)
the deer weighed a total of 160 pounds
c)
Scientists don't know exactly how many pythons are out there
20.
Fire ants were introduced into the US by
a)
Groundskeepers to the Governor's mansion in Alabama
b)
Stowing away on a cargo ship sailing from India
c)
Stuck in a pant leg of a tourist coming in from South America
d)
A ship that used soil from South America as ballast
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