Try to answer each question. There are ten questions. Write your SSN on every page. The examination is worth 100 points. List one virus that can overwinter in each of the following hosts.
Streptomyces scabies causes a serious disease.
Term used to describe transmission of stylet-borne viruses. The most prominent insect vector of viruses. A prominent insect vector of viruses in which viruses replicates. A major means by which bacteria gain entry to plants. Gram reaction of most plant pathogenic bacteria.