CDFA Pest Prevention Plant Regulation Practice Exam

The nut tree pests quarantine covers which one of the following trees?

1. Almond

2. Pine

3. Walnut

4. Oak

The correct answer is: Walnut

The correct choice is walnut because the nut tree pests quarantine specifically targets pests that affect trees in the Juglandaceae family, of which walnuts are a significant member. This quarantine is important for protecting the health of walnut trees, as they can be susceptible to various pests and diseases that might not only harm individual trees but could also lead to broader agricultural impacts. Almonds, while also a type of nut tree, fall under a different set of regulations primarily focused on other common pests. Pine trees do not belong to the nut category and are instead conifers, subject to different pest management regulations. Oaks, being deciduous hardwoods, do not fit into the nut tree classification either, since they produce acorns rather than nuts like walnuts. Therefore, walnut is the only tree among the options that aligns with the specifics of the nut tree pests quarantine.