2026\2027 A+ Grade
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