CDFA Pest Prevention Plant Regulation Practice Exam

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Prepare for the CDFA Pest Prevention Plant Regulation Exam. Use study guides and interactive quizzes, complete with explanations and hints, to ensure you're ready to succeed.

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What is the scientific name for perennial sowthistle?

  1. Cardaria spp.

  2. Agropyron repens

  3. Sonchus arvensis

  4. Convolvulus arvensis

The correct answer is: Sonchus arvensis

The scientific name for perennial sowthistle is Sonchus arvensis. This plant is a member of the Asteraceae family and is characterized by its deep taproot and distinctively lobed leaves. Perennial sowthistle can be identified by its yellow flowers, which are quite similar to other members of the sowthistle genus, and it is known for its ability to thrive in a variety of conditions, making it a common weed in many agricultural settings. The other options listed represent different plant species that do not correspond to perennial sowthistle. It is important to understand the distinctions between these species, as effective pest prevention and plant regulation are often reliant on correct identification.