Chapter 4

Question 1

Population density

Answer 1

How crowded an area is

Question 2

Dispersion

Answer 2

Pattern of spacing of a population within an area

Question 3

Uniform

Answer 3

Same throughout an area

Question 4

Uniform examples

Answer 4

Black bear, tiger, territorial animals

Question 5

Clumped

Answer 5

Bunched together

Question 6

Clumped examples

Answer 6

Herd animals, herbivore, bison

Question 7

Random

Answer 7

No specific pattern

Question 8

Random examples

Answer 8

White-tailed deer, squirrel

Question 9

Density-independent factor

Answer 9

Abiotic, limiting factors that do not depend on population density

Question 10

Density-independent factors examples

Answer 10

Weather events, fire

Question 11

Density-dependent factors

Answer 11

Biotic, limiting factors that depend on population density

Question 12

Density-dependent factor examples

Answer 12

Disease, competition

Question 13

Population growth rate PGR

Answer 13

How fast a given population grows or shrinks

Question 14

Natality

Answer 14

Birth rate

Question 15

Mortality

Answer 15

Death rate

Question 16

Immigration

Answer 16

Moving INTO a population

Question 17

Emigration

Answer 17

EXITING a population

Question 18

Lag phase

Answer 18

When the population is fighting for life before its fat and happy

Question 19

Exponential growth

Answer 19

No limiting factors being pushed onto the population “fat and happy, making babies” -weilert

Question 20

When does the exponential growth model happen?

Answer 20

When there no limited factors being pushed

Question 21

What is a logistic growth model?

Answer 21

Longer exponential growth model, eventually resources will be limited.

Question 22

Carrying capacity

Answer 22

How much of a population that Mother Nature can support long term

Question 23

Examples that make carrying capacity

Answer 23

Weather, populations, food, water

Question 24

Reproductive patterns

Answer 24

Vary depending on species, age, life span, reproduction cycle

Question 25

R-strategist

Answer 25

Organisms that do well in environments that change a lot

Question 26

R-strategist examples

Answer 26

Fly, zebra mussel, sea turtle

Question 27

K-strategist

Answer 27

Do well in set environments

Question 28

K-strategist examples

Answer 28

Bears, mouse, cat

Question 29

Demography

Answer 29

Study of human population size, density, distribution, movement and birth and death rates

Question 30

What things increase human population

Answer 30

Increases in technology, we’re curious, industrial revolution

Question 31

PGR

Answer 31

Human population growth rate

Question 32

What types of countries have a higher PGR?

Answer 32

Developing countries

Question 33

ZPG

Answer 33

Zero population growth

Question 34

3 parts to a population

Answer 34

1. Pre-reproductive 2. Reproductive 3. Post- reproductive

Question 35

Age structure

Answer 35

Number of people in each reproductive stage

Question 36

Human carrying capacity

Answer 36

Developed countries are using more energy than the undeveloped countries