Ch. 8 Key Terms.

Question 1

population

Answer 1

population is the set of individuals within a species living in the sameplace at the same time

Question 2

density

Answer 2

Population size is the total number of individuals,whereas density is the number of individuals per unit area or volume,such as the number of bass per cubic meter of water in a lake

Question 3

dispersion

Answer 3

dispersion describes the arrangement of its individuals in space. A population’s dispersion may be even, clumped, or random

Question 4

growth rate

Answer 4

The growth rate is the birth rate minus the death rate

Question 5

reproductive potential

Answer 5

the maximum number of offspring that each member of the population can produce, which is called its reproductive potential.

Question 6

exponential growth,

Answer 6

exponential growth, which means they grow faster and faster.

Question 7

Carrying capacity

Answer 7

Carrying capacity is the population size where birth rates and death rates are equal

Question 8

niche

Answer 8

A niche (NICH) can bethe range of conditions in which a species can survive

Question 9

Competition

Answer 9

Competition is a relationship in which different individuals or populations attempt to use the same limited resource.

Question 10

predation.

Answer 10

An organism that feeds on another organism is called a predator, and the organism that is fed upon is the prey. This kind of interaction is called predation.

Question 11

parasitism.

Answer 11

The relationship between the parasite and its hostis called parasitism.

Question 12

mutualism.

Answer 12

A close relationship between two species in which each species provides a benefit to the other is called mutualism.

Question 13

commensalism

Answer 13

A relationship in which one species benefits and the other species is neither harmed nor helped is called commensalism

Question 14

symbiosis.

Answer 14

A relationship in which two species live in close association is called symbiosis.