Deserts are found at 30 deg. latitude N and S of equator. This is related to what factor? -
ANSWER All of the above are involved with forming deserts at 30 deg. latitude
"Energy flows THROUGH and ecosystem" - ANSWER There is a continual input of
energy into ecosystems from the sun and a certain amount constantly gets transformed into
heat and dissipates into the environment at every trophic level.
Food web on exam - ANSWER
A frog eating a grasshopper is a good example of which of the following? -
ANSWER both A and B (a predator-prey relationship and an interspecific interaction)
What is suspected with contributing to human ancestors with upright walking? -
ANSWER All of the above
All species of bats echolocate? - ANSWER False
What are the characteristics of prokaryotes? - ANSWER Simple (few organelles),
single celled
What does their DNA look like? - ANSWER Circular
1
,What are decomposers? - ANSWER Break down dead organic matter w/ excrement
= inorganic compounds (fungi & most bacteria)
What are detritivores? - ANSWER -break down dead organic matter in environment
-assigned to MULTIPLE trophic levels !!
Biological species concept - ANSWER -Can they breathe, mate
-species = group capable of interbreeding & producing fertile young !
-reproductively isolated from other groups
phylogenetic species concept - ANSWER -most common !
-1970s
-phylogeny = evolutionary history of organisms
-species = smallest group of organisms w/ similar features (DNA) that come from common
ancestor !
morphological species concept - ANSWER -shape & structure
-species = group that share distinctive anatomical characteristics (size, shape, color) !
-The OG
-Carolus Linnaeus
Who was Carolus Linnaeus? - ANSWER -1750
-one of first to name organisms
-teacher & scientists
-classified based on morphology (artificial)
r-selected species - ANSWER "r" = reproduction
2
, -adapted for rapid reproduction & high densities
-environ. & resources unpredictable
-many young
-"cheap" young
overshoot K = pop. crash
-nonefficient use of resources or they are unpredicatble
Organisms tend to:
-short lives
-many offspring
-little parental care
-quick reproductive rate !!
(ex. insects, small mammals, annual plants)
K-selected species - ANSWER -species w/ stable populations, flucuate near K
-stable environments
-few offspring
-"expensive" young
-efficient
Organisms tend to:
-slow reproductive rate (few young at a time)
-provide parental care, long lives (ex.elephants, bats, humans)
biotic potential - ANSWER human pop. looks like this/scary.
J-shaped growth curve - ANSWER the shape of an exponential growth curve
S-shaped growth curve - ANSWER the shape of a logistic growth curve
3
ANSWER All of the above are involved with forming deserts at 30 deg. latitude
"Energy flows THROUGH and ecosystem" - ANSWER There is a continual input of
energy into ecosystems from the sun and a certain amount constantly gets transformed into
heat and dissipates into the environment at every trophic level.
Food web on exam - ANSWER
A frog eating a grasshopper is a good example of which of the following? -
ANSWER both A and B (a predator-prey relationship and an interspecific interaction)
What is suspected with contributing to human ancestors with upright walking? -
ANSWER All of the above
All species of bats echolocate? - ANSWER False
What are the characteristics of prokaryotes? - ANSWER Simple (few organelles),
single celled
What does their DNA look like? - ANSWER Circular
1
,What are decomposers? - ANSWER Break down dead organic matter w/ excrement
= inorganic compounds (fungi & most bacteria)
What are detritivores? - ANSWER -break down dead organic matter in environment
-assigned to MULTIPLE trophic levels !!
Biological species concept - ANSWER -Can they breathe, mate
-species = group capable of interbreeding & producing fertile young !
-reproductively isolated from other groups
phylogenetic species concept - ANSWER -most common !
-1970s
-phylogeny = evolutionary history of organisms
-species = smallest group of organisms w/ similar features (DNA) that come from common
ancestor !
morphological species concept - ANSWER -shape & structure
-species = group that share distinctive anatomical characteristics (size, shape, color) !
-The OG
-Carolus Linnaeus
Who was Carolus Linnaeus? - ANSWER -1750
-one of first to name organisms
-teacher & scientists
-classified based on morphology (artificial)
r-selected species - ANSWER "r" = reproduction
2
, -adapted for rapid reproduction & high densities
-environ. & resources unpredictable
-many young
-"cheap" young
overshoot K = pop. crash
-nonefficient use of resources or they are unpredicatble
Organisms tend to:
-short lives
-many offspring
-little parental care
-quick reproductive rate !!
(ex. insects, small mammals, annual plants)
K-selected species - ANSWER -species w/ stable populations, flucuate near K
-stable environments
-few offspring
-"expensive" young
-efficient
Organisms tend to:
-slow reproductive rate (few young at a time)
-provide parental care, long lives (ex.elephants, bats, humans)
biotic potential - ANSWER human pop. looks like this/scary.
J-shaped growth curve - ANSWER the shape of an exponential growth curve
S-shaped growth curve - ANSWER the shape of a logistic growth curve
3
