Monocot vs. dicot roots: Identify the feature that distinguishes monocot roots from dicot roots. Full question: Monocot root differs from dicot root in having which of the following anatomical features? Choose the correct option.

ConceptMonocot roots are typically polyarch with a large, well-developed pith and lack secondary growth (no functional vascular cambium). Dicot roots often have fewer xylem arms, little to no central pith, and can show secondary growth.

Option analysis(A) Correct: prominent pith in monocot roots.(B) Incorrect: secondary growth is characteristic of many dicot roots, not monocots.(C) Incorrect description of dicots, not monocots (monocots → many xylem strands).(D) Incorrect: roots have a defined stele.(E) Incorrect: roots show exarch, not endarch, xylem maturation.

Final AnswerA large, well-developed central pith.