Ecology Test

Question 1

A group of the same species

Answer 1

population

Question 2

A group of ecosystems with the same climate

Answer 2

biome

Question 3

A group of the same type of organisms

Answer 3

species

Question 4

Organisms that cannot make their own food

Answer 4

heterotroph

Question 5

The process by which green plants make food

Answer 5

photosynthesis

Question 6

The study of interactions of organisms and their community

Answer 6

ecology

Question 7

Organisms that can make their own food

Answer 7

autotrophs

Question 8

All of the organisms and their physical environment

Answer 8

ecosystem

Question 9

Several populations that live in the same area

Answer 9

community

Question 10

The portion of the planet that supports life

Answer 10

biosphere

Question 11

The total amount of living material found in a trophic level

Answer 11

biomass

Question 12

A network of overlapping food chains

Answer 12

food web

Question 13

Organisms that feed on broken down plant and animal material

Answer 13

detritivore

Question 14

A series of steps in which organisms transfer energy by eating and being eaten

Answer 14

food chain

Question 15

Another term for heterotroph

Answer 15

consumer

Question 16

A living factor in the environment

Answer 16

biotic factor

Question 17

Organisms that help recycle nutrients in a food web

Answer 17

decomposer

Question 18

Process by which organisms make food from inorganic materials

Answer 18

chemosynthesis

Question 19

A nonliving factor in the environment

Answer 19

abiotic factor

Question 20

Both biotic and abiotic factors

Answer 20

habitat

Question 21

An organisms role in the environment

Answer 21

niche

Question 22

What is the competitive exclusion principle?

Answer 22

no two species can occupy exactly the same niche in exactly the same habitat at exactly the same time

Question 23

What does the herbivore-plant relationship effect?

Answer 23

the size and distribution of plants

Question 24

What are keystone species?

Answer 24

when changes in one population of species can cause dramatic changes in the structure of a community

Question 25

Any relationship in which 2 species live closely together

Answer 25

Symbiosis

Question 26

Mutualism

Answer 26

both organisms benefit

Question 27

Parasitism

Answer 27

one organism is benefited and the host is harmed

Question 28

Commensalism

Answer 28

one organism benefits and one is un-affected

Question 29

Ecological Succession

Answer 29

the series of changes that occur in a community over time

Question 30

Primary Succession

Answer 30

disturbances that occur on surfaces where no soil exists (no previous life)

Question 31

During which process do organisms take carbon out of the atmosphere?

Answer 31

photosynthesis

Question 32

Which biogeochemical cycle does not involve a stage where the chemical enters the atmosphere?

Answer 32

phosphorus cycle

Question 33

What is not recycled in biogeochemical cycles?

Answer 33

energy

Question 34

What is an ecological pyramid?

Answer 34

the percent of biomass at each trophic level