Chapter 5

Question 1

Population

Answer 1

A group of individuals of the same species living in an area at the same time

Question 2

Carrying capacity

Answer 2

The maximum population size of a species that can be supported in a given environment
Represented as K

Question 3

Population dynamic

Answer 3

The way in which population of species change in size and structure over - time

Question 4

Abundance

Answer 4

The number of organisms of a particular species in a population

Question 5

r-selection

Answer 5

A type of population growth of opportunistic species quickly colonize an unstable ecosystem

Question 6

k-seleciton

Answer 6

Population growth that is initially slow in growth but long term is sustainable

Question 7

r-selected species

Answer 7

A fast-growing and reproducing species, often the first to take up unused resources and living spaces

Question 8

K-selected species

Answer 8

A slow-growing, long-lived species. typical of those in the long-established biological community.

Question 9

Population density

Answer 9

The number of individuals of the same species living in the same habitat at a particular time

Question 10

Birth rate

Answer 10

Number of births in a population over a given time

Question 11

Death rate

Answer 11

The number of deaths in a population over a given time

Question 12

Distribution

Answer 12

The places in an ecosystem where individuals of species are found

Question 13

Random distribution

Answer 13

Type of distribution in which organisms are spaced irregularly.

Question 14

uniform distribution

Answer 14

Type of distribution in which organisms are evenly spread

Question 15

Clumped distribution

Answer 15

individuals in a population are grouped together where biotic and/or abiotic factors are favourable

Question 16

Quadrat

Answer 16

A square, rectangle or circular frame used to mark out an are in which organisms are to be sampled.

Question 17

Transect

Answer 17

A method used in population sampling where a line is drawn through a community to determine the distribution of species

Question 18

Species distribution modelling

Answer 18

Computerized modeling method is used to predict future needs and resource management.

Question 19

Density

Answer 19

The number of individuals in a given area

Question 20

Density dependant factors

Answer 20

The factors whose effects on the population vary depending on the density of the population

Question 21

Density independent factors

Answer 21

The factors that affect all individuals regardless of the population size.

Question 22

Phases of population growth curve

Answer 22

Lag phase - slow growth phase

Exponential growth phase - Rapid increase in population size

Transitional phase - Population growth decelerates

Plateau - Overal birth rate equals the death rate