Chapter 15 Vocab

Question 1

Abiotic Factor

Answer 1

All of the aspects of the environment that has never been alive.

Question 2

Biotic Factor

Answer 2

All of the living or once living aspects of the environment.

Question 3

Biosphere

Answer 3

Consists of all the parts of Earth where life can be found. This is the highest level of organization in ecology.

Question 4

Ecology

Answer 4

The science of how living things interact with each other and their environment.

Question 5

Population Density

Answer 5

An average measure of individuals in a population for a given area.

Question 6

Population Distribution

Answer 6

How people in a population are distributed, or spread through an area.

Question 7

Population Growth Rate

Answer 7

How quickly a population changes in size over time.

Question 8

Population Pyramid

Answer 8

A graphical illustration that shows the distribution of various age groups in population.

Question 9

Population

Answer 9

The number of things living in an environment.

Question 10

Age-Sex Structure

Answer 10

Numbers of individuals of each sex and age in the population.

Question 11

Carrying Capacity

Answer 11

The number of people of a biological species in an environment.

Question 12

Exponential Growth

Answer 12

Growth rate that is higher than other growth rates

Question 13

Logistic Growth

Answer 13

Is growth at a normal rate

Question 14

Commensalism

Answer 14

A symbiotic relationship in which one species benefits while the other species is not affected.

Question 15

Community

Answer 15

A group of things living together.

Question 16

Competetition

Answer 16

A relationship between organisms that depend on the same resources.

Question 17

Keystone Species

Answer 17

Predators that play a special role in their community.

Question 18

Mutualism

Answer 18

A symbiotic relationship in which both species benefit.

Question 19

Parasitism

Answer 19

A symbiotic relationship in which one species benefits and the other species is harmed.

Question 20

Parasite

Answer 20

The species that benefits

Question 21

Host

Answer 21

The species that’s harmed the most.

Question 22

Predatation

Answer 22

The preying of one animal on others

Question 23

Predators

Answer 23

An animal that naturally preys on others.

Question 24

Prey

Answer 24

An animal that is hunted an killed by another for food.

Question 25

Symbiosis

Answer 25

A close relationship between two species in which at least one species benefits.

Question 26

Ecosystem

Answer 26

A community of interacting organisms and their physical environment.

Question 27

Niche

Answer 27

The role that a particular species plays in its ecosystems.

Question 28

Habitat

Answer 28

The physical environment in which species live and to which it has adapted.

Question 29

Terrestrial Biome

Answer 29

Land based biomes.

Question 30

Aquatic Biomes

Answer 30

Water based biomes

Question 31

Biome

Answer 31

A group of similar ecosystems

Question 32

Marine Biome

Answer 32

Covers 70% of earth

Question 33

Climate

Answer 33

The weather conditions in an area.

Question 34

Freshwater Biome

Answer 34

Any body of water that is made of freshwater

Question 35

Competitive Exclusion Principle

Answer 35

States that two species that compete for the exact same resources cannot stably coexist.

Question 36

Aphotic Zone

Answer 36

The portion of a lake or ocean where there is little or no sunlight.

Question 37

Photic Zone

Answer 37

The layer of the ocean that receives sunlight.