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The systemic acquired resistance (SAR) demonstrated in the experiment with the tobacco mosaic
virus is possible due to signals sent:
Question 2 options:
through the air
through the xylem
along the leaf surface
through the phloem
through the air
through the xylem
along the leaf surface
through the phloem
Solution
Answer: through the phloem
Explanation:
Several studies have shown that the establishment of SAR involves the generation and transport
of signals via phloem to the uninfected distal tissues

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  • 1. The systemic acquired resistance (SAR) demonstrated in the experiment with the tobacco mosaic virus is possible due to signals sent: Question 2 options: through the air through the xylem along the leaf surface through the phloem through the air through the xylem along the leaf surface through the phloem Solution Answer: through the phloem Explanation: Several studies have shown that the establishment of SAR involves the generation and transport of signals via phloem to the uninfected distal tissues