Ch 5/6

Question 1

Niche

Answer 1

organisms role in its environment

Question 2

Immigration vs Emigration

Answer 2

i: organisms move into population
e: organisms leave population

Question 3

Density Dependent vs Density Independent factors

Answer 3

d: stress, predation, competition, disease (changes as population size changes)
i: natural disasters, human activities (factors affect all populations regardless of population size)

Question 4

Exponential growth

Answer 4

Humans always show exponential growth, (unlimited resources)

Question 5

Population Dispersion

Answer 5

describes the arrangement of individuals within a habitat at a particular point in time (random, uniform, clump)

Question 6

Competitive Exclusion

Answer 6

when species are eliminated in area due to competition

Question 7

Fundamental vs Realized niche

Answer 7

F: everything an organism would do if there was no competition
R: everything an organism does because of interaction and competition

Question 8

Parasitism vs Mutualism vs Commensalism

Answer 8

p: organism lives on, or in another, using it for nutrients (tapeworm, fungi, ticks) +/-
m: when both species benefit (clean fish & sharks, pollinators & flower) +/+
c: 1 organism is benefited and other organism isn’t affected (fish ride on sharks, vines on trees)

Question 9

Primary vs Secondary succession

Answer 9

P: new group of organism grows where there was not life before (new island)
S: new growth in place where there was a past life that got destroyed (fire)

Question 10

Pioneer Species

Answer 10

organism that starts succession

Question 11

Biodiversity and resilience

Answer 11

An organism that can bounce back