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    Question

    What are tyloses, and what is their role in plant

    defense against pathogens?
    A Structures that facilitate nutrient transport in xylem vessels Correct Answer Incorrect Answer
    B Protrusions of xylem parenchyma cell walls that physically block vessels Correct Answer Incorrect Answer
    C Enzymes involved in phenol synthesis Correct Answer Incorrect Answer
    D Biochemical elicitors inducing host defense Correct Answer Incorrect Answer

    Solution

      Protrusions of xylem parenchyma cell walls that physically block vessels. Tyloses are formed by the protrusion of xylem parenchyma cell walls into xylem vessels, physically blocking the vessels and preventing the spread of pathogens.

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