Biodiversity — Unit test Answers

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A model that shows the many interconnected feeding relationships in an ecosystem is a food . ( only use one lower case word )

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2
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organismpopulationecosystemspecies

A
organism
B
population
C
ecosystem
D
species
3

Which two words are paired correctly?

A
vertebrate, endoskeleton
B
invertebrate, endoskeleton
C
vertebrate, autotroph
D
invertebrate, autotroph
4

Which scenario would result in a positive population growth?Use this formula: population growth = (birth rate + immigration) – (death rate + emigration)

A
30 individuals emigrate, 30 individuals die, 30 individuals are born, 0 individuals immigrate
B
22 individuals emigrate, 10 individuals are born, 12 individuals immigrate, 0 individuals die
C
15 individuals immigrate, 9 individuals emigrate, 6 individuals are born, 0 individuals die
D
18 individuals immigrate, 20 individuals die, 1 individual is born, 0 individuals emigrate
5

A group of lions is chasing a zebra. The lions are most likely responding to which kind of stimulus?

A
the external stimulus of fear
B
the internal stimulus of fear
C
the external stimulus of hunger
D
the internal stimulus of hunger
6

White-tailed deer eat green plants, acorns, fruits, nuts, and twigs.Which describes the role of a white-tailed deer?

A
autotrophic omnivore
B
heterotrophic omnivore
C
autotrophic herbivore
D
heterotrophic herbivore
8

A large manufacturing company releases chemicals into the air every day. The chemicals eventually make their way into local bodies of water, killing many of the organisms that live in these areas.

A
habitat destruction due to pollution
B
habitat destruction due to poaching
C
pollution due to poaching
D
poaching due to habitat destruction
9

Which describes how people typically respond to heat?

A
with a fever, in response to an internal stimulus
B
with a fever, in response to an external stimulus
C
by sweating, in response to an internal stimulus
D
by sweating, in response to an external stimulus
14

Which best describes the relationship between population size, carrying capacity, and limiting factors?

A
The size of a population usually stays high due to its carrying capacity and limiting factors.
B
The size of a population usually stays near its limiting factors due to carrying capacity.
C
The size of a population usually stays near its carrying capacity due to limiting factors.
D
The size of a population usually stays low due to its carrying capacity and limiting factors.
15

Which is an example of biodiversity contributing to the sustainability of an ecosystem?

A
A meadow covers a large area of land, providing shelter to many organisms.
B
The ocean can only support organisms that can survive salty conditions.
C
One species of plant has been growing in a field for several years.
D
Many kinds of fruit trees support a variety of birds and other animals in a forest.

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