During its life cycle, cedar-apple rust overwinters on evergreen hosts and produces which feature?

During its life cycle, cedar-apple rust overwinters on evergreen hosts and produces which feature?

• A. Jelly-like masses of orange telia
• B. White powdery colonies on leaves
• C. Galls on tree trunks
• D. Conical cankers on branches

Answer: (A)

The feature being tested is the distinctive overwintering and spring reproductive stage of cedar-apple rust on evergreen hosts. The fungus overwinters as galls on junipers or other evergreens. In spring, when conditions are wet, these galls produce orange, jelly-like structures called telia that emerge as gelatinous masses (telial horns) and release spores to infect apples. That orange, jelly-like phenomenon is the hallmark feature of cedar-apple rust during this stage. White powdery colonies are not associated with this rust (they’re typical of powdery mildew on many plants). Galls on tree trunks and conical cankers on branches describe other problems or diseases and don’t capture the characteristic spring telial display of cedar-apple rust.

The feature being tested is the distinctive overwintering and spring reproductive stage of cedar-apple rust on evergreen hosts. The fungus overwinters as galls on junipers or other evergreens. In spring, when conditions are wet, these galls produce orange, jelly-like structures called telia that emerge as gelatinous masses (telial horns) and release spores to infect apples. That orange, jelly-like phenomenon is the hallmark feature of cedar-apple rust during this stage.

White powdery colonies are not associated with this rust (they’re typical of powdery mildew on many plants). Galls on tree trunks and conical cankers on branches describe other problems or diseases and don’t capture the characteristic spring telial display of cedar-apple rust.