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Environmental Science Final
Test Description: Part 2
Instructions: Answer all questions to get your test result.
1) In the history of the world, how many mass extinctions have occurred?
A
13
B
7
C
10
D
5
2) A deer eating a shrub is an example of
A
Herbivory
B
Symbiosis
C
Predation
D
Parasitism
3) The first level of all food pyramids
A
Is chemosynthesis
B
Is photosynthesis
C
Consists of primary consumers
D
Consists of primary producers
4) A species with a restricted tolerance for environmental conditions is
A
A specialist
B
Highly competitive
C
An autotroph
D
A generalist
5) Giraffes, lions, zebras, hyenas, and all other living things of the Serengeti make up a(n)
A
Biosphere
B
Community
C
Ecosystem
D
Population
6) Every spring, many species of bird travel north to the Arctic to breed, in the fall travel south again for winter. This is an example of
A
Emigration
B
Population growth
C
Immigration
D
Migration
7) You are studying the vegetation communities of the Mongolian grasslands in a 1000-square-kilometer area. What is your best strategy for estimating the number of individuals of different plant species growing throughout the grasslands?
A
Simply counting each one
B
Direct observation
C
Sampling
D
Indirect observation
8) You will be conducting a study of the interactions of vegetation, animals, mineral composition of the soil, and water levels in a salt marsh. You are studying the salt marsh
A
Ecosystem
B
Population
C
Community
D
Biosphere
9) “All living things and their physical environment within a given area” best defines
A
A population
B
An ecosystem
C
A community
D
The biosphere
10) A population of wolves is reintroduced into Yellowstone National Park. For the first decade, the wolf population grows exponentially. Then, the population growth slows. The new pattern is known as
A
Carrying capacity
B
Logistic growth
C
Limiting factors
D
Exponential growth
11) Pandas depend on bamboo. The amount of intact bamboo forest will help determine the
A
Biotic potential of the population
B
Sex ratio of the population
C
Carrying capacity of the population
D
Limiting factor of the population
12) Fish, cattails, frogs, water lilies, dragonflies, and all the other living things in a pond make up a(n)
A
Ecosystem
B
Community
C
Population
D
Biosphere
13) A grassland experiences a drought that causes most of the plants to die and several watering holes to dry up. The antelope that live on the grassland experience a decrease in population because water and plants are key
A
Habitats
B
Biotic factors
C
Abiotic factors
D
Resources
14) In a population of 100 monkeys, you count 48 males and 52 females. This population has an approximately even
A
Carrying capacity
B
Survivorship curve
C
Sex ratio
D
Biotic potential
15) A population’s growth rate is determined by births, deaths,
A
Immigration and emigration
B
Immigration and biotic potential
C
Immigration and migration
D
Migrations and biotic potential
16) An ecologist who is studying the mineral requirements and daily water intake of a plant species is studying the
A
Plant’s ecosystem
B
Individual
C
Plant’s community
D
Plant’s population
17) Every summer, Siberian cranes fly from India to Siberia, where they breed and raise their young. When winter comes, the cranes fly back to India. This is an example of
A
Immigration
B
emigration
C
population control
D
migration
18) The equation for determining population growth is
A
(births + deaths) – (immigration + emigration)
B
(births + immigration) + (deaths – emigration)
C
(births + emigration)n + (deaths – immigration)
D
(births + immigration) – (deaths + emigration)
19) Tigers living in warm climates have thinner coasts of fur than tigers living in cool climates. This is a result of
A
Ecosystem health
B
Species diversity
C
Genetic diversity
D
Ecosystem diversity
20) The easiest component of biodiversity to measure is
A
Species diversity
B
Ecosystem diversity
C
Ecosystem health
D
Genetic diversity
*select an answer for all questions
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