AP Flashcards

7888438105	Survivorship curve	Shows how the likelihood of death can vary with age	0
7888446723	Type I	Survival rates are high when organisms are young and decrease sharply when organisms are older EX. Human	1
7888453204	Type II	Survival rates are equivalent regardless of an organisms age EX. Birds or mice	2
7888461165	Type III	Death takes place at young ages, and surviving rates are greater when they are older EX. amphibians or trees	3
7888551878	Logistic curve		4
7888595807	J curve		5
7888604946	R- selected organism	Focus on quantity, not quality: small size, fast development, short lived, reproduction in early life, many small offspring, no parental care EX. Mice, rabbits, weeds, bacteria	6
7888610136	K-selected organisms	Low biotic potential with a relatively small number of offspring and take a long time to raise their young: large size, slow development, long lived, reproduction in later life, few large offspring, slow population rate EX. Giraffes, elephants, humans	7
7888617550	Density independent	Factors are limiting factors whose influence is not affected by population density. EX. Floods, fires, landslides	8
7888623907	Density dependent	Limiting factors whose influence is affected by population density. EX. Food- more dense population = greater struggle to get food	9
7888635299	Habitat	Specific enviroonment in which an organism lives	10
7888643289	Niche	A species' niche reflects its use of resources and its functional role in community	11
7888651618	Population distribution	-Random -Uniform -Clumped	12
7888659967	Describe predator prey relationships and curves	A predator prey relationship is when the prey's population grows exponentially and then so does the predator. This is because more prey becomes available, so their population goes up as well. The predators population will folllowe the prey's, but at a different rate.	13
7888669762	What is the world population today	7.6 billion	14
7888674482	How has the world population changed over the last 10-12,000 years	Over the last 10-12000 years the population has increased. This is because we are becoming more advanced and people are healthier and live longer, so the world is starting to become over populated. We are in an exponential growth phase.	15
7888683233	In a population of 50,000 individuals the birth rate is 52 out of 1000 individuals and the death rate is 14 out of every 1000 individuals. What is the growth rate of this population? How many people will be added to or deleted from the population in one year?	B=52/1000=.052 D=14/1000=.014 .052 - .014 = .038 X 50000 = 19000.000 increase per	16
7888689908	Immigration	Arrival of individuals from outside the population	17
7888694174	Emigration	Departure of individuals from the population	18