試題詳解

32. Which accurately describes a key structural component or function within a typical vascular plant?
(A) Water undergoes active transport through xylem to defy gravity.
(B) Stomata, mainly on leaf undersides, regulate gas exchange and transpiration.
(C) The cambium enables secondary growth, decreasing stem/root girth.
(D) Root mineral uptake relies solely on soil concentration gradient.
(E) Flowers are reproductive structures that prevent sexual reproduction.