Ch. 8 Key Terms. Flashcards Preview

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Flashcards in Ch. 8 Key Terms. Deck (14)
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1

population

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

2

density

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

3

dispersion

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

4

growth rate

The growth rate is the birth rate minus the death rate

5

reproductive potential

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

6

exponential growth,

exponential growth, which means they grow faster and faster.

7

Carrying capacity

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

8

niche

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

9

Competition

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

10

predation.

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.

11

parasitism.

The relationship between the parasite and its hostis called parasitism.

12

mutualism.

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

13

commensalism

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

14

symbiosis.

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