For a disease to establish itself in a plant population, which of the following must occur first? Select one: a. THE PATHOGEN MUST BE ERADICATED b. THE PLANT MUST EXHIBIT RESISTANCE TO THE PATHOGEN

b. THE PLANT MUST EXHIBIT RESISTANCE TO THE PATHOGEN

b. THE PLANT MUST EXHIBIT RESISTANCE TO THE PATHOGEN

Which trait is common among weeds that make them difficult to eradicate from agricultural fields?
Select one:
a. ABILITY TO REPRODUCE VEGETATIVELY
b. HIGH GENETIC DIVERSITY
c. LACK OF SEED PRODUCTION
d. SLOW GROWTH CYCLE