Topic 3 (LAB) - Population Ecology

Question 1

The movement of individuals INTO a population from another population

Answer 1

Immigration

Question 2

What type of limiting factor are these:

Competition
Predation
Parasitism and disease

Answer 2

Density-dependent

Question 3

The movement of individuals OUT of a population and into another population

Answer 3

Emigration

Question 4

A limiting factor that affects the size of any population, no matter what density of individuals live in an area

Answer 4

Density-independent

Question 5

These are factors affecting population size

Answer 5

Immigration
Emigration
Birth
Death

Question 6

What type of limiting factor are these:

Unusual weather
Natural disasters
Human activities

Answer 6

Density-independent

Question 7

This pattern of survivorship curve is typical of humans and other large mammals

Answer 7

Type I

Question 8

The maximum number of individuals of a particular species that the environment can support

Answer 8

Carrying capacity

Question 9

A type of population growth that begins with a period of slow growth, followed by exponential growth

Answer 9

Logistic growth

Question 10

3 basic patterns of survivorship curves

Answer 10

Type I
Type II
Type III

Question 11

This pattern of survivorship curve is typical of invertebrates, fish, amphibians, and plants

Answer 11

Type III

Question 12

The factor that has the greatest effect on limiting population growth

Answer 12

Limiting factor

Question 13

A limiting factor that is affected by the population density

Answer 13

Density-dependent

Question 14

2 types of population growth

Answer 14

Exponential growth
Logistic growth

Question 15

Also called Saccharomyces cerevisiae (single-celled eukaryote), a fungi that can produce a new generation
every two hours

Answer 15

Baker’s Yeast

Question 16

A type of population growth that occurs when a population size increases greatly over a period of time

Answer 16

Exponential growth

Question 17

A technique used to determine population size where it is impractical to count every individual.

Scientist typically begin by capturing a random sample of individuals in a population. Captured individuals are tagged or “marked” and then released

Answer 17

Mark-Recapture method

Question 18

This pattern of survivorship curve is typical of birds, small mammals, and some reptiles

Answer 18

Type II

Question 19

A measurement of the number of individuals living in a defined space

Answer 19

Population density

Question 20

Formula of Mark-Recapture method

Answer 20

N = sn / x

x = number of marked individuals captured in the 2nd sampling
n = total number of individuals marked and released in the 1st sampling
s = total number of individuals captured in the 2nd sampling
N = population size

Question 21

A diagram that shows the number
of organisms that survive over time, starting from birth

Answer 21

Survivorship curve

Question 22

These are limiting factors on the population growth of Baker’s Yeast

Answer 22

Glucose availability
Light exposure
Oxygen availability
Temperature