Ecology Unit

Question 1

includes all life, land, water, and air on Earth where live may exist

Answer 1

biosphere

Question 2

a form of animal communication that involves making noises to signal a message (bark, chirp, growl, etc)

Answer 2

auditory communication

Question 3

a group of individuals of the same species living in the same area

Answer 3

population

Question 4

a relationship in which one organism feeds on another organism

Answer 4

predation

Question 5

a community of living things interacting with the nonliving parts of their environment

Answer 5

ecosystem

Question 6

a collection of ecosystems with the same climate an similar communities

Answer 6

biome

Question 7

a model that shows all of the interconnected feeding relationships in an ecosystem

Answer 7

food web

Question 8

the maximum population size that an area can support

Answer 8

carrying capacity

Question 9

the nonliving parts of an environment (rocks, air, water)

Answer 9

abiotic factors

Question 10

a relationship in which both organisms benefit

Answer 10

mutualism

Question 11

organisms that feed on other organisms for energy

Answer 11

consumers (heterotrophs)

Question 12

organisms that break down dead organisms and waste for energy

Answer 12

decomposers

Question 13

organisms that feed only on plants

Answer 13

herbivores

Question 14

a model that shows a single pathway, or sequence, of feeding relationships in an ecosystem

Answer 14

food chain

Question 15

organisms that feed on both plants and animals

Answer 15

omnivores

Question 16

organisms that feed on dead or decaying animals

Answer 16

scavengers

Question 17

a form of animal communication that uses chemicals, such as urine or pheromones

Answer 17

chemical communication

Question 18

two or more different populations living in the same area

Answer 18

community

Question 19

a model that shows the amount of energy available at each feeding level

Answer 19

energy pyramid

Question 20

the feeding position of an organism in a food chain

Answer 20

trophic level

Question 21

the amount of stored energy that is passed to another trophic level

Answer 21

10% rule

Question 22

an organisms job, or role, in an ecosystem

Answer 22

niche

Question 23

a relationship in which organisms fight over the same resources

Answer 23

competition

Question 24

the smallest level of ecological organization; a single organism

Answer 24

individual

Question 25

the organism that is eaten

Answer 25

prey

Question 26

the organism that is eating

Answer 26

predator

Question 27

organisms that feed only on animals

Answer 27

carnivores

Question 28

a relationship in which one organism benefits while the other is not affected

Answer 28

commensalism

Question 29

the study of how living things interact with each other and the environment

Answer 29

ecology

Question 30

a form of animal communication that uses badges, such as body coloring, or displays, such as facial expressions

Answer 30

visual communication

Question 31

a relationship in which one organism benefits while the other is harmed

Answer 31

parasitism

Question 32

the living parts of an environment (plants, animals)

Answer 32

biotic factors

Question 33

a form of animal communication that involves touch and may be used to comfort, establish dominance, or form social bonds

Answer 33

tactile communication

Question 34

the biotic and abiotic factors that regulate the size of a population (how many organisms can live in an ecosystem)

Answer 34

limiting factors

Question 35

organisms that make their own food by photosynthesis

Answer 35

producers (autotrophs)

Question 36

occurs when the last organism of a species dies

Answer 36

extinction