During plasmolysis, which structure retracts from the cell wall?
Correct option is C, Protoplast. In PSS- Sec-F-Transport problems like this, the accurate statement is Protoplast; the others are common mix-ups. Not these: A) Cell wall; B) Tonoplast; D) Middle lamella. 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.