試題詳解

31. Which statement accurately distinguishes Ulva from Caulerpa regarding their multicellular organization?
(A) Ulva is a colonial protist, while Caulerpa is a true multicellular alga with specialized tissues.
(B) Ulva forms true multicellular bodies through cell division and differentiation, whereas Caulerpa achieves large
size via repeated nuclear division without cytoplasmic division, making it not truly multicellular.
(C) Caulerpa exhibits alternation of generations, while Ulva only has a single-celled haploid stage.
(D) Both are truly multicellular, but Ulva has a simpler organizational plan compared to Caulerpa's complex thallus.