Populations

Question 1

The number of organisms in a population per unit area.

Answer 1

Population Density

Question 2

Change in population size over time

Answer 2

Growth Rate

Question 3

population size is not changing

Answer 3

Zero growth rate

Question 4

Population will increase exponentially (J-curve)

Answer 4

Exponential Growth

Question 5

Starts out exponential, but levels off at a certain population size (S-curve)

Answer 5

Logistic Growth

Question 6

the maximum population size an ecosystem can support, leveling off point

Answer 6

Carrying Capacity

Question 7

reproduce fast, have many young, develop quickly. (rabbits)

Answer 7

R-selected species

Question 8

reproduce steadily, have few young develop slowly. (kangaroos)

Answer 8

K-selected species

Question 9

Factors that have a greater influence on population size as the population increases

Answer 9

Density Dependant Factors

Question 10

Factors that have an impact on population size regardless of what the population size is.

Answer 10

Density Independent Factors

Question 11

changing of plant communities

Answer 11

Succession

Question 12

begins with bare rock from volcanic activity

Answer 12

Primary succession

Question 13

begins with soil from a previous community

Answer 13

Secondary succession

Question 14

first community

Answer 14

Pioneer community

Question 15

ending community

Answer 15

Climax community