ASU BIO 182 Exam 3 UPDATED ACTUAL
Exam Questions and CORRECT Answers
What is a resource? - CORRECT ANSWER - Any substance an organism requires to
survive or reproduce. Ex) food, water, mates shelter, nutrients, oxygen/co2
What factors determine prey choice? - CORRECT ANSWER - Energy content, encounter
rate, handling time, search cost
Profitability - CORRECT ANSWER - (energy / handling time)
animals = high profitability
fruits/veggies = low profitability
Why not grow to largest population size possible? - CORRECT ANSWER - • Many die
before having chance to reproduce
• All else being equal, early reproducers leave more decedents. Earlier you reproduce, the earlier
your children can reproduce
Energy budget - CORRECT ANSWER - Maintenance, production, activity
Why is reproduction costly? - CORRECT ANSWER - • Energy for mating, gametes, and
parental care
• Exposure to predators & impaired locomotion
• Missed opportunity to feed & thermoregulate
population - CORRECT ANSWER - group of species living in a given area
Sampling - CORRECT ANSWER - count individuals in a few small areas & extrapolate
for the entire area
Exam Questions and CORRECT Answers
What is a resource? - CORRECT ANSWER - Any substance an organism requires to
survive or reproduce. Ex) food, water, mates shelter, nutrients, oxygen/co2
What factors determine prey choice? - CORRECT ANSWER - Energy content, encounter
rate, handling time, search cost
Profitability - CORRECT ANSWER - (energy / handling time)
animals = high profitability
fruits/veggies = low profitability
Why not grow to largest population size possible? - CORRECT ANSWER - • Many die
before having chance to reproduce
• All else being equal, early reproducers leave more decedents. Earlier you reproduce, the earlier
your children can reproduce
Energy budget - CORRECT ANSWER - Maintenance, production, activity
Why is reproduction costly? - CORRECT ANSWER - • Energy for mating, gametes, and
parental care
• Exposure to predators & impaired locomotion
• Missed opportunity to feed & thermoregulate
population - CORRECT ANSWER - group of species living in a given area
Sampling - CORRECT ANSWER - count individuals in a few small areas & extrapolate
for the entire area
