Leafroll virus slows growth in which parts of the vine?

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $25.99Unlock all

Prepare for the WSET Diploma D1 Exam with comprehensive practice quizzes. Enhance your understanding with detailed questions and in-depth explanations. Boost your confidence and ensure exam success. Start practicing today!

Multiple Choice

Leafroll virus slows growth in which parts of the vine?

Explanation:
Leafroll virus is phloem-limited, so it disrupts the transport of carbohydrates within the vine. That long-distance flow supports the growth of actively growing tissues. As a result, the parts most affected are the shoots and roots, whose growth slows when the supply of sugars and nutrients is impaired. This aligns with the vine’s overall vigor being reduced and helps explain symptoms like reduced new shoot growth and weaker root development. Fruit color, flowering, and bark thickening are not the primary growth areas impacted by this virus, so the slowdown in shoots and roots is the best match.

Leafroll virus is phloem-limited, so it disrupts the transport of carbohydrates within the vine. That long-distance flow supports the growth of actively growing tissues. As a result, the parts most affected are the shoots and roots, whose growth slows when the supply of sugars and nutrients is impaired. This aligns with the vine’s overall vigor being reduced and helps explain symptoms like reduced new shoot growth and weaker root development. Fruit color, flowering, and bark thickening are not the primary growth areas impacted by this virus, so the slowdown in shoots and roots is the best match.

More Multiple Choice Questions
Subscribe

Get the latest from Passetra

You can unsubscribe at any time. Read our privacy policy