Question

Systemic fungicides, unlike purely contact fungicides that remain only on the treated plant surface, are absorbed into plant tissue and translocated within the plant's vascular system. This absorption and internal movement give systemic fungicides a key therapeutic advantage of being able to:

Q: Answer-Systemic fungicides, unlike purely contact fungicides that remain only on the treated plant surface,...

Explanation Because systemic fungicides are absorbed and translocated within plant tissue, they can act therapeutically against fungal pathogens that have already established an infection inside the plant, offering curative action in addition to the purely protective, surface-level action provided by contact fungicides.

A Function only as a strictly preventive measure applied before any infection ever occurs

B Remain effective for a considerably shorter duration than typical contact fungicides

C Be applied exclusively as soil drenches, and never as foliar sprays

D Have essentially no measurable effect on fungal pathogens once they are inside plant tissue

E Provide curative action against fungal infections that have already penetrated into plant tissue, in addition to protective action

Practice Next

Systemic fungicides, unlike purely contact fungicides that remain only on the treated plant surface, are absorbed into plant tissue and translocated within the plant's vascular system. This absorption and internal movement give systemic fungicides a key therapeutic advantage of being able to:

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