11 16 SI A Ecl 365 Life History Strategies 1 What are the stages of an individual s life a Birth b Growth Develop c Mature d Reproduce e Senesce f Die 2 What does the Life History theory explain a LH theory explains why organisms have evolved particular life history strategies 3 The life history theory concentrates on traits that directly impact fitness What are these traits a Growth rates pre natal post natal b Age at maturity age at first reproduction c Reproductive investment fecundity d Mortality rates e Lifespan 4 True False Life history traits do not vary independently from each other a True 5 Fast life strategies are associated with selection a R 6 Slow life strategies are associated with selection a K 7 What are characteristics of fast life strategies a Fast growth b Early maturation c Many offspring d High mortality e Short lifespan 8 What are characteristics of slow life strategies a Slow growth b Late maturation c Fewer offspring d Low mortality e Long lifespan 9 What are the three major life history activities a Growth b Maintenance increases survival c Reproduction 10 are limited so investment in one trait comes at the of investment in other traits a Resources cost 11 Though we can control for differences in body size we still may observe the to continuum in strategies a Slow to fast 12 Though we control for differences for differences in we can still observe the slow to fast continuum in strategies a Phylogeny taxonomic group 13 Physiological in energy allocated among growth reproduction and somatic maintenance a Trade off 14 Fast growth reproductive output life a High short 15 Slow growth reproductive output life a Low long 16 True False High adult mortality favors fast life histories while low adult mortality favors slow life histories a True 17 What selection pressure s favor different strategies a Extrinsic mortality factors 18 What are extrinsic mortality factors examples a Predation harsh weather parasite disease etc 19 True False Life history strategies do not vary with latitude a False they do 20 Are the differences in life history strategies that vary with latitude due to taxonomic groups i e do species of the same group display different life history strategies depending on latitude habitat environment a No temperate species have faster life histories than tropical species even when comparing close relatives 21 What cause the latitudinal pattern in life history strategies a Higher adult mortality in temperate regions favors fast life histories Opposite for tropical regions 22 What causes the different mortality rates and thus different life history strategies in the garter snakes a Lakeshore Fast living snakes i Higher predation pressure ii Constant food availability b Meadow Slow living snakes i Lower predation pressure ii Variable prey availability iii Higher elevation cooler temperatures
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