Vascular wilt diseases primarily cause blockage of:
Correct option is C, Xylem vessels. In PSS- Sec-F-Transport problems like this, the accurate statement is Xylem vessels; the others are common mix-ups. Not these: A) Phloem vessels; B) Stomata; D) Hydathodes. Tissue transport questions usually turn on xylem vs phloem, living vs dead cells, or source vs sink.
Ref: Best CSIR NET Plant Physiology books: Master Unit 6 with Taiz & Zeiger and Salisbury & Ross. Crack Part C experimental questions with top textbooks.
