Abstract：Abstract: Many plant species have the ability to alter their leaf morphology in response to different envi-ronments. This phenomenon is termed heterophylly. Some textbooks of botany took Trapa natans L. as an exam-ple of heterophylly, and stated that its floating leaves are rhombic while submerged leaves are finely, pin-nately divided. However, observations on the morphology and anatomy of T. natans indicated that the sub-merged filiform organs are adventitious roots with many lateral roots, and these lateral roots are modified or specialized organs with the function of photosynthesis. Herein, an exploratory experiment was designed to investigate whether the submerged filiform organs of T. natans are leaves, roots or modified stipules. This ex-periment can also improve the students’ inquiring ability and critical thinking habit and skills.
引用本文:
黎维平. 菱的丝状结构是沉水叶还是同化根？——植物学教材质疑(四)[J]. 生命科学研究, 2021, 25(4): 372-376.
LI Wei-ping. Are the Filiform Organs Submerged Leaves or Photosynthetic Roots in Trapa natans?
Questioning Botany Textbooks (Ⅳ). Life Science Research, 2021, 25(4): 372-376.
