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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 increase.
B
The population of deer will become extinct.
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 amount of food available in the area
B
the number of trees in the area
C
the number of birds that live in the area
D
the amount of snow in the area each year
3) Which best explains the role of bacteria in an ecosystem?
A
They absorb energy from the synthesis of inorganic compounds.
B
They convert carbon dioxide and water into simple carbohydrates.
C
They release energy from the decomposition of atmospheric gases.
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
Biological Feedback
B
Homeostatic Control
C
Carrying Capacity
D
Biological Diversity
5) After a rabbit population reaches the carrying capacity of its habitat, the population of rabbits will most likely
A
Increase only
B
Alternately increase and decrease
C
Decrease only
D
Remain Unchanged
6) In most habitats, the removal of predators will have the most immediate impact on a population of
A
Herbivores
B
Decomposers
C
Microbes
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
occupy different ecological niches.
C
reproduce at different times of the year.
D
are the same size.
8) Which is an example of parasitism?
A
Catterpillar and Butterfly
B
Cat and Mouse
C
Tadpole and Frog
D
Human and Tapeworm
9) Which of these organisms is a producer in a marine ecosystem?
A
Fish
B
Algae
C
Worm
D
Seagull
10) A niche is an organisms _______ in the community or ecosystem
A
Habitat
B
Class
C
Consumer
D
Role
*select an answer for all questions
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