Concept:Study the tissue arrangement in the transverse sections to identify the plant organ shown.
Explanation:The diagrams show a central vascular cylinder surrounded by endodermis, pericycle, and a wide cortex.
These are characteristic features of a root, not a stem.
In a stem, vascular bundles are arranged differently and such a distinct central cylinder is not usually seen.
Because X and Y are root sections, any statement describing them as sections of stems is incorrect.
Therefore, among the given options, the statement that says they are stems is not correct.
Answer:D. stems
