lqc 17a exam qs

Question 1

explain why a species laying eggs 2 weeks earlier may be an advantage

Answer 1

more food availability, results in lack of competition, chicks have longer period of time to develop, more energy to breed, more energy to breed means more eggs

Question 2

why would birds not migrating change in behaviour has resulted in more successful breeding of this species

Answer 2

fewer birds are dying, more birds to breed, energy not used for flying so more energy to attract mate as time is not spent migrating

Question 3

state a reason why 20 eggs are used on each plant of an experiment

Answer 3

produce relatable data

Question 4

describe how the growth rate of caterpillars could be determined in an investigation

Answer 4

measure the length of caterpillar, measure several to calculate the mean, take measurements over a period of time, growth rate = change in length / time