unit test

Question 1

Biotic

Answer 1

living or was living

Question 2

Abiotic

Answer 2

never living

Question 3

Dependent variable

Answer 3

The variable you measure

Question 4

Mechanical defense

Answer 4

discourage predation and herbivory by discouraging physical contact

Question 5

Physical defense

Answer 5

Many species use physical appearance, such as body shape and coloration, to avoid being detected by predators.

Question 6

Chemical defense

Answer 6

using chemicals to stop from other of its species from being eaten

Question 7

Behavioral defense

Answer 7

using behavior to play dead

Question 8

Mimicry

Answer 8

a harmless species imitates the warning coloration of a harmful species.

Question 9

Competitive Exclusion Principle

Answer 9

different species cannot coexist in a community if they are competing for all the same resources.

Question 10

Symbiosis

Answer 10

interaction between two different organisms living in close physical association, typically to the advantage of both.

Question 11

Mutualism

Answer 11

in which two species benefit from their interaction.

Question 12

commensalism

Answer 12

when one species benefits from a close prolonged interaction, while the other neither benefits nor is harmed.

Question 13

Parasitism

Answer 13

the parasite benefits, but the organism being fed upon, the host, is harmed. The

Question 14

Biodiversity

Answer 14

biodiversity used by ecologists is the number of different species in a particular area and their relative abundance.

Question 15

Species richness

Answer 15

is the term used to describe the number of species living in a habitat or other unit.

Question 16

Relative abundance

Answer 16

is known as the diversity of the community.

Question 17

Species evenness

Answer 17

The even spread of the amount of species in an ecosystem

Question 18

Foundation species

Answer 18

are considered the “base” or “bedrock” of a community, having the greatest influence on its overall structure.

Question 19

Keystone species

Answer 19

one whose presence has inordinate influence in maintaining the prevalence of various species in an ecosystem,

Question 20

Trophic level

Answer 20

the position of an organism in an ecosystem

Question 21

autotroph

Answer 21

an organism that can produce its own food using light, water, carbon dioxide, or other chemicals.

Question 22

biomagnification

Answer 22

the increase in concentration of a substance, e.g a pesticide, in the tissues of organisms at successively higher levels in a food chain.

Question 23

Biogeochemical cycle

Answer 23

the movement and transformation of chemical elements and compounds between living organisms, the atmosphere, and the Earth’s crust

Question 24

CHNOPS

Answer 24

Carbon, Hydrogen, Nitrogen, Oxygen, Phosphorus, and Sulfur

Question 25

Hydrosphere

Answer 25

the total amount of water on a planet.

Question 26

carbon cycle

Answer 26

the process that moves carbon between plants, animals, and microbes; minerals in the earth; and the atmosphere

Question 27

Carbon sink

Answer 27

absorbs carbon dioxide from the atmosphere.

Question 28

Carbon store

Answer 28

places where carbon is stored away from the atmosphere

Question 29

Carbon source

Answer 29

any natural or artificial production site of carbon and/or any chemical compounds composed of carbon, such as carbon dioxide and methane

Question 30

Nitrogen cycle

Answer 30

a biogeochemical process through which nitrogen is converted into many forms, consecutively passing from the atmosphere to the soil to organism and back into the atmosphere

Question 31

Eutrophication

Answer 31

the process in which a water body becomes overly enriched with nutrients, leading to the plentiful growth of simple plant life.