Cedar apple rust overwinters on evergreen hosts and produces what?

Cedar apple rust overwinters on evergreen hosts and produces what?

• A. One type is found on sycamore; symptoms are leaves with brown lesions, witches brooms and twig dieback; cankers may develop twigs.
• B. Overwinters on evergreen hosts and produce jellylike masses of orange Telia.
• C. Caused by bacterium; many hosts are susceptible.
• D. A viral disease affecting junipers.

Answer: (B)

Cedar apple rust has a two-host life cycle, with overwintering on the evergreen host (the juniper/cedar) and a key feature in spring: the galls on the evergreen host erupt into jellylike, orange masses called telia. These telia are spore-producing structures that release spores to infect apple trees, continuing the cycle. That jellylike orange telial stage on the evergreen host is the telltale hallmark described, making it the best-fit answer. The other options describe different pathogens or symptoms that don’t match this rust’s life cycle.

Cedar apple rust has a two-host life cycle, with overwintering on the evergreen host (the juniper/cedar) and a key feature in spring: the galls on the evergreen host erupt into jellylike, orange masses called telia. These telia are spore-producing structures that release spores to infect apple trees, continuing the cycle. That jellylike orange telial stage on the evergreen host is the telltale hallmark described, making it the best-fit answer. The other options describe different pathogens or symptoms that don’t match this rust’s life cycle.