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Population Factors And Symbiotic Relationships
Test Description: 8.L.3
Instructions: Answer all questions to get your test result.
1) If wolves prey on deer for food, what will most likely happen to the deer population if wolves are removed from an area where deer live?
A
The population of deer will become extinct.
B
The population of deer will increase.
C
The population of deer will decrease.
D
The population of deer will remain the same.
2) Which best determines the number of wolves that can live in an area?
A
the number of trees in the area
B
the amount of snow in the area each year
C
the number of birds that live in the area
D
the amount of food available in the area
3) Which best explains the role of bacteria in an ecosystem?
A
They convert carbon dioxide and water into simple carbohydrates.
B
They release energy from the decomposition of atmospheric gases.
C
They absorb energy from the synthesis of inorganic compounds.
D
They break down organic matter into necessary nutrient components.
4) An environment can support only as many organisms as the available energy, minerals, and oxygen will allow. Which term is best described by this statement
A
Homeostatic Control
B
Biological Diversity
C
Biological Feedback
D
Carrying Capacity
5) After a rabbit population reaches the carrying capacity of its habitat, the population of rabbits will most likely
A
Remain Unchanged
B
Decrease only
C
Increase only
D
Alternately increase and decrease
6) In most habitats, the removal of predators will have the most immediate impact on a population of
A
Microbes
B
Decomposers
C
Herbivores
D
Producers
7) Two species of animals with a similar appearance live in the same habitat but do not compete for food. This is because they most likely
A
are active at night.
B
are the same size.
C
reproduce at different times of the year.
D
occupy different ecological niches.
8) Which is an example of parasitism?
A
Catterpillar and Butterfly
B
Tadpole and Frog
C
Cat and Mouse
D
Human and Tapeworm
9) Which of these organisms is a producer in a marine ecosystem?
A
Fish
B
Algae
C
Seagull
D
Worm
10) A niche is an organisms _______ in the community or ecosystem
A
Class
B
Consumer
C
Role
D
Habitat
*select an answer for all questions
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