Bis 2B Final

Front 1

all species and their abiotic environment in an area

Back 1

Ecosystem

Front 2

the position of an organism in the ecosystem according to how it obtains energy

Back 2

Trophic Level

Front 3

the amount of water pumped into the atmosphere by evaporation from the ground via transpiration from vegetation – a measure of solar radiation, temperature and rainfall.

Back 3

Evapotranspiration

Front 4

a linear sequence of species (or groups of species) in which each species feeds exclusively on the next trophic level down in the chain.

Back 4

Food Chain

Front 5

complex trophic relationships among species in an ecosystem.

Back 5

Food Web

Front 6

the pattern of movement of a chemical element through living organisms and the four components of the physical environment (land, air, freshwater, oceans)

Back 6

Biogeochemical Cycle

Front 7

the ecosystem response to the addition of artificial or natural substances, such as nitrates and phosphates, through fertilizers or sewage, to an aquatic system.

Back 7

Eutrophication

Front 8

instances in which two or more indistinguishable species do not interbreed.

Back 8

Cryptic Species

Front 9

reduction or prevention of gene flow between populations by genetically determined differences between them.

Back 9

Reproductive Isolation

Front 10

reduction of gene flow by an extrinsic barrier (unsuitable habitat).

Back 10

Geographic Isolation

Front 11

potential mates do not meet

Back 11

Ecological Isolation

Front 12

members of the opposite sex from different populations meet but do not mate (sexual selection)

Back 12

Behavioral Isolation

Front 13

genitalia do not fit (“lock and key hypothesis”)

Back 13

Mechanical Isolation

Front 14

gametes fail to produce viable zygote

Back 14

Gametic Incompatibility

Front 15

a set of genetic traits which have high fitness when they occur together, but have low fitness when not together

Back 15

Coadapted Gene Complex

Front 16

an adaptation to prevent the production of unfit hybrids, usually by strengthening of prezygotic barriers in sympatric populations.

Back 16

Reinforcement

Front 17

colonists carry only a small fraction of the total variation in the source causing a loss of alleles in the founding population.

Back 17

Founder Effect

Front 18

the development of many different forms from an originally homogeneous group of organisms as they fill different ecological niches

Back 18

Adaptive Radiation

Front 19

different ecomorphs evolved independently on different islands

Back 19

Parallel Evolution

Front 20

when a later group has caused the extinction of reduction of an earlier group. The later group outcompeted the earlier group

Back 20

Competitive Displacement

Front 21

extinction of an earlier group is followed by proliferation of a later group. The later group did not drive the earlier one extinct.

Back 21

Incumbent Replacement

Front 22

Speciation rate is higher in the tropics

Back 22

Speciation Hypothesis