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WorksheetsEcosystem Stability
Total questions: 12
Worksheet time: 38mins
Name
Class
Date
1.
What is the carrying capacity of the following graph?
a)
1000
b)
8000
c)
800
d)
600
2.
Growth of biological organisms which goes on unhindered when resources are unlimited.
a)
population density
b)
carrying capacity
c)
exponential growth
d)
survivorship curve
3.
Indicates the greatest number of any species that can indefinitely exist within a specific habitat without threatening the existence of other species also living in that habitat
a)
carrying capacity
b)
population density
c)
population
d)
population demographics
4.
Largest number of individuals of a population that a environment can support
a)
population
b)
limiting factor
c)
carrying capacity
d)
none of these
5.
Which of the following would be the most likely effect, if there were a sudden increase in the cricket population?
a)
There would be a decrease in the small bird population.
b)
There would be a decrease in the grass/flowers population.
c)
There would be a decrease in the mice population.
d)
There would be an increase in the grass/flowers population.
6.
What would most likely happen if an ecosystem no longer received sunlight?
a)
The number of herbivores would increase
b)
The number of plants would increase
c)
all organisms would adapt
d)
All living organisms would eventually die
7.
Examples of how humans negatively affect local ecosystems are
a)
Building dams, deforestation (cutting down trees), adding point sources to nearby streams to allow for run-off, building roads and structures, and salting roads.
b)
Creating laws to prohibit fishing from local streams.
c)
Planting trees and other plants to attract native species.
d)
Removing non-native species from the environment.
8.
How would the biodiversity of this ecosystem be affected if the lantern fish disappeared?
a)
The ocean sunfish population would increase.
b)
The large shark population would die out.
c)
The squid would die out.
d)
There would be no change.
9.
Which organism do the owl and the weasel compete for in the food web?
a)
Hawk
b)
Spider
c)
Grasshopper
d)
Shrew
10.
What may happen if the snowshoe hare was removed from the food web pictured?
a)
The insects in the habitat would increase.
b)
The shrew population would decrease due to being only hawk food source.
c)
The willow tree population would decrease.
d)
Foxes would dies due to no food source.
11.
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
12.
A species that is not native to an area is called:
a)
Native Species
b)
Natural Species
c)
Invasive Species
d)
Symbiotic Species
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