2.1 Species and Populations

Question 1

Species

Answer 1

a group of organisms that share common characteristics and can interbreed and produce fertile offspring

Question 2

Habitat

Answer 2

the environment in which a species normally lives in

Question 3

Niche

Answer 3

the role that an organism fills in an ecosystem

Question 4

Abiotic Factors

Answer 4

non living factors in a habitat

Question 5

Biotic Factors

Answer 5

living factors in a habitat

Question 6

Carrying Capacity

Answer 6

the maximum number of a species that can be sustainably supported by an area

Question 7

Fundamental Niche

Answer 7

the theoretical range of conditions and resources in which a species could survive and reproduce

Question 8

Realized Niche

Answer 8

the actual range of conditions and resources that a species does survive and reproduce in

Question 9

Symbiotic Relationship

Answer 9

an intimate relationship between members of two or more species

Question 10

Mutualism

Answer 10

a relationship that benefits both species

Question 11

Commensalism

Answer 11

a relationship that benefits one species and doesn’t affect the other

Question 12

Parasitism

Answer 12

A relationship that benefits one species and harms the other

Question 13

Interspecific Competition

Answer 13

the competition that takes place in between members of different species

Question 14

Intraspecific Competition

Answer 14

the competition that takes place between members of the same species

Question 15

S and J curves

Answer 15

J - a graph showing exponential growth
S - a graph showing exponential growth until limiting factors make the population reach its carrying capacity

Question 16

Limiting Factors

Answer 16

anything that effects a population’s size and slows or stops it from growing.

Question 17

Predation

Answer 17

the consumption of one species by another

Question 18

Herbivory

Answer 18

organisms that feed on plants

Question 19

Competition

Answer 19

competition between organisms for the same resource in an ecosystem

Question 20

Competitive Exclusion

Answer 20

when interspecific competition results in one species getting driven out by the other

Question 21

Speciation

Answer 21

an evolutionary process by which populations evolve to become distinct species

Question 22

Population Dynamics

Answer 22

the study of the factors that cause a change in the size of a population

Question 23

R - Species

Answer 23

very high reproductive rate

Question 24

K - Species

Answer 24

very low reproductive rate