Population

Question 1

population

Answer 1

a group of the same species that occupy the same place at the same time

Question 2

Population growth rate

Answer 2

how fast a given population grows

Question 3

Calculate growth rate

Answer 3

Birth rate - death rate

Question 4

Natality

Answer 4

birthrate in a given time

Question 5

Mortality

Answer 5

death rate in a given time

Question 6

immigration

Answer 6

organisms moving into a population

Question 7

emigration

Answer 7

organisms moving away from a population

Question 8

Immigration and emigration are usually about ______ in a population

Answer 8

equal

Question 9

What are the 2 growth models

Answer 9

Exponiental growth
Logistical growth

Question 9

Organisms moving into or out of a population also effects the of …..

Answer 9

individuals in the population

Question 10

exponential growth model

Answer 10

occurs under ideal circumstances and that all populations grow exponentially until some limiting factor slows the population growth

Question 11

examples of ideal circumstances

Answer 11

unlimited resources, no predators/ disease

Question 12

Logistic growth model

Answer 12

the curve on the exponential growth model where the population growth slows typically due to some environmental pressure

Question 13

Exponential growth occurs until..

Answer 13

the population reaches its carrying capacity

Question 14

unrestricted growth

Answer 14

exponiental

Question 15

restricted growth

Answer 15

logistic

Question 16

carrying capacity

Answer 16

maximum number of individuals in a species that and environment can support for the long term

Question 17

carrying capacity is limited by

Answer 17

the energy, oxygen, water, and nutrients available

Question 18

Population density

Answer 18

the number of organisms per unit area

Question 19

population limiting factors definition

Answer 19

anything that keeps a population from growing forever

Question 20

populations reach their carrying capacity due to

Answer 20

limiting factors

Question 21

2 types of population limiting factors

Answer 21

density-dependent
density- independent

Question 22

density independent factors

Answer 22

any factor in the environment that does not depend on the number of members in a population per unit area

Question 23

density independent factors
examples

Answer 23

Weather events
fire
human alterations of the environment
air, land, and water pollution

Question 24

density dependant factors

Answer 24

any factor in the environment that depends on the number of members in a population per unit area

Question 25

density dependant factors examples

Answer 25

Biotic factors
disease
competition
parasites