Question 5
A new plant disease sweeps through a district. Which population is most likely to contain individuals that survive it?
The right answer is the one marked above.
One raised from seed. Seed comes from sexual reproduction, so the plants carry mixed characteristics and no two are alike. Some may hold characteristics that resist the disease.
The other three are all asexual, and all give offspring identical to the single parent. A disease that defeats one plant in such a population defeats every plant in it — which is the price paid for how fast and how certain those methods are.