CH. 8 Vocab

Question 1

Population

Answer 1

Is the set of individuals within a species living in the sameplace at the same time.

Question 2

Density

Answer 2

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

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 percentage change in the size of a population over a given period of time

Question 5

Reproductive Potential

Answer 5

This rate is limited by the maximum number of offspring that each member of the population can produce

Question 6

Exponential Growth

Answer 6

grow faster and faster

Question 7

Carrying Capacity

Answer 7

is the population size where birth rates and death rates are equal. the maximum population that its ecosystem can support indefinitely.

Question 8

Niche

Answer 8

the unique position occupied by a species both in terms of its physical use of the habitat and its function within the ecological community

Question 9

competition

Answer 9

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.

Question 11

parasitism

Answer 11

An organism that lives in or on another organism and feeds on it isa parasite. The organism the parasite takes its nourishment from is known as the host. The relationship between the parasite and its host is called parasitism.

Question 12

mutualism

Answer 12

A close relationship between two species in which each species provides a benefit to the other

Question 13

commensalism

Answer 13

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

Question 14

symbiosis

Answer 14

A relationship in which two species live in close association