ASU BIO 182 Exam 3 Questions With Complete Solutions

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 Mark & recapture correct answer: Capture, mark & release individuals. Resample & record number of marked and unmarked individuals Why is human population growing exponentially?