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Environmental Science & Ecology Exam

Total questions: 70

Worksheet time: 2hrs 15mins

Name
Class
Date
1.

Which biome covers about 75% of the Earth’s surface?

a)

Forest

b)

Desert

c)

Aquatic

d)

Tundra

2.

What refers to the maximum population size an environment can sustain?

a)

Natality

b)

Carrying capacity

c)

Mortality

d)

Population density

3.

Which ecosystem function involves the breakdown of complex organic matter?

a)

Productivity

b)

Energy flow

c)

Decomposition

d)

Nutrient cycling

4.

Which discipline studies interactions between organisms and their environment?

a)

Environmentalism

b)

Ecology

c)

Environmental science

d)

Biology

5.

Which population growth curve shows exponential growth under unlimited resources?

a)

Sigmoid curve

b)

Linear curve

c)

J-shaped curve

d)

Declining curve

6.

Which biome is the coldest with low biotic diversity?

a)

Desert

b)

Grassland

c)

Tundra

d)

Forest

7.

What level of biological organization includes different populations living together?

a)

Organism

b)

Community

c)

Ecosystem

d)

Biosphere

8.

What is the smallest unit of life?

a)

Atom

b)

Molecule

c)

Cell

d)

Tissue

9.

Which type of density considers only usable or productive land?

a)

Crude density

b)

Biomass density

c)

Numerical density

d)

Specific density

10.

Which ecosystem is created by humans for farming and animal husbandry?

a)

Mangrove ecosystem

b)

Agricultural ecosystem

c)

Forest ecosystem

d)

Marginal ecosystem

11.

Which term refers to the absolute number of individuals in a population?

a)

Density

b)

Biomass

c)

Abundance

d)

Natality

12.

What biome is dominated by grasses with few trees?

a)

Forest

b)

Grassland

c)

Desert

d)

Tundra

13.

Which factor limits population growth regardless of population size?

a)

Predation

b)

Disease

c)

Density-independent factor

d)

Competition

14.

Which ecosystem is located between two ecosystems?

a)

Urban ecosystem

b)

Forest ecosystem

c)

Marginal ecosystem

d)

Coral reef ecosystem

15.

What refers to the flow of energy from producers to consumers?

a)

Decomposition

b)

Energy flow

c)

Nutrient cycling

d)

Productivity

16.

Which population characteristic studies age structure?

a)

Mortality

b)

Age distribution

c)

Natality

d)

Density

17.

Which biome receives less than 50 cm of rainfall annually?

a)

Grassland

b)

Tundra

c)

Desert

d)

Forest

18.

Which population mortality occurs under existing environmental conditions?

a)

Potential mortality

b)

Minimum mortality

c)

Realized mortality

d)

Specific mortality

19.

What refers to the rate of birth in a population?

a)

Mortality

b)

Natality

c)

Density

d)

Growth rate

20.

Which ecosystem provides protection against coastal erosion?

a)

Forest ecosystem

b)

Coral reef ecosystem

c)

Mangrove ecosystem

d)

Agricultural ecosystem

21.

What level of organization includes organs working together?

a)

Organism

b)

Tissue

c)

Organ system

d)

Cell

22.

Which biome includes tropical, temperate, and boreal types?

a)

Grassland

b)

Forest

c)

Desert

d)

Tundra

23.

Which population variation occurs irregularly without obvious factors?

a)

Cyclic

b)

Non-fluctuating

c)

Irruptive

d)

Seasonal

24.

What is the study of population abundance and change over time?

a)

Ecology

b)

Environmental science

c)

Demography

d)

Population ecology

25.

Which ecosystem includes ponds, lakes, and rivers?

a)

Terrestrial ecosystem

b)

Urban ecosystem

c)

Aquatic ecosystem

d)

Agricultural ecosystem

26.

Which population density is expressed as biomass per unit area?

a)

Numerical density

b)

Biomass density

c)

Crude density

d)

Specific density

27.

What measures human demand on natural resources?

a)

Carrying capacity

b)

Biocapacity

c)

Ecological footprint

d)

Productivity

28.

Which age group does not reproduce?

a)

Reproductive

b)

Pre-reproductive

c)

Post-reproductive

d)

Juvenile

29.

Which ecosystem is the product of industrialized human society?

a)

Forest ecosystem

b)

Urban ecosystem

c)

Marginal ecosystem

d)

Mangrove ecosystem

30.

Which function refers to biomass production rate?

a)

Energy flow

b)

Decomposition

c)

Productivity

d)

Nutrient cycling

31.

The biosphere includes all regions of Earth where life exists.

4 lines
32.

Environmentalism is a biological sub-discipline.

4 lines
33.

Cells combine to form tissues.

4 lines
34.

A population includes different species living together.

4 lines
35.

Desert soils are always infertile.

4 lines
36.

Energy flow in ecosystems is one-way.

4 lines
37.

Population density can be measured per unit volume.

4 lines
38.

Natality refers to death rate.

4 lines
39.

Mangroves are important coastal ecosystems.

4 lines
40.

Sigmoid growth stabilizes at carrying capacity.

4 lines
41.

Density-dependent factors increase with population size.

4 lines
42.

Environmental science draws heavily from Earth sciences.

4 lines
43.

Aquatic biomes include freshwater and marine systems.

4 lines
44.

Mortality is unrelated to environmental conditions.

4 lines
45.

Forests cover about one-third of Earth’s land surface.

4 lines
46.

Ecology studies only plants.

4 lines
47.

Coral reefs are aquatic ecosystems.

4 lines
48.

Biomass density measures number of individuals.

4 lines
49.

Tundra has high biodiversity.

4 lines
50.

Ecological footprint evaluates sustainability.

4 lines
51.

The smallest unit of an element

4 lines
52.

Study of interactions between organisms and environment

4 lines
53.

Rate of reproduction in a population

4 lines
54.

Maximum birth rate under ideal conditions

4 lines
55.

Group of individuals of the same species

4 lines
56.

Cold biome with permafrost

4 lines
57.

Artificial ecosystem for farming

4 lines
58.

Flow of nutrients through ecosystems

4 lines
59.

Death rate under ideal conditions

4 lines
60.

Area where grasses dominate

4 lines
61.

Group of organs working together

4 lines
62.

Total land and sea area needed to support consumption

4 lines
63.

Type of growth curve that levels off

4 lines
64.

Population change that is seasonal or annual

4 lines
65.

Breakdown of organic matter

4 lines
66.

Study of population age, birth, and death

4 lines
67.

Ecosystem dominated by trees

4 lines
68.

Coastal ecosystem protecting shorelines

4 lines
69.

The living entity with multiple organ systems

4 lines
70.

Largest ecological level of organization

4 lines

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