Biology Chapter 3.

Front 1

Ecology

Back 1

scientific study of interactions among organisms and between organisms and their environment.

Front 2

Biosphere

Back 2

part of Earth in which life exists including land, water, and air or atrmosphere.

Front 3

Species

Back 3

group of similar organisms that can breed and produce fertile offspring

Front 4

Population

Back 4

group of individuals of the same species that live in the same area

Front 5

Community

Back 5

assemblage of different populations that live together in a defined area

Front 6

Ecosystem

Back 6

collection of all the organisms that live in a particular place, together with their nonliving environment.

Front 7

Biome

Back 7

group of ecosystems that have the same climate and dominant communities

Front 8

Autotroph/ Producer

Back 8

organism that can capture energy from sunlight or chemicals and use it to produce its own food from inorganic compounds; also called a producer

Front 9

Photosynthesis

Back 9

process by which plants and some other organisms use light energy to convert water and carbon dioxide into oxygen.

Front 10

Heterotroph/ Consumer

Back 10

Organism that obtains energy from the foods it consumes; also called a consumer

Front 11

Herbivore

Back 11

organism that obtains energy by eating only plants

Front 12

Carnivore

Back 12

organism that obtains energy by eating animals

Front 13

Omnivore

Back 13

organisms that obtains energy by eating by eating both plants and animals.

Front 14

Detrivore

Back 14

organim that feeds on plants and animal remains and other dead matter

Front 15

Decomposer

Back 15

organism that breaks down and obtains energy from dead organic matter

Front 16

food chain

Back 16

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

Front 17

Food web

Back 17

network of complex interactions formed by the feeding relationships among the various organisms in an ecosystem

Front 18

trophic level

Back 18

step in a food chain or food web

Front 19

ecological pyramid

Back 19

diagram that shows the relative amounts of energy or matter within each trophic level in a food cahin or food web

Front 20

Biomass

Back 20

total amount of living tissue within a given trophic level

Front 21

Evaportaion

Back 21

process by which water changes froma liquid into a atmospheric gas

Front 22

transpription

Back 22

loss of water from a planet through its level

Front 23

nitrogen fixation

Back 23

process by which of converting nitrogen gas into ammonia