植物的祖先是进行光合作用的单细胞生物，由此产生的植物可能缺乏真正的根、茎、叶和复杂的生殖结构，如花朵。
The ancestors of plants were photosynthetic single-celled organisms that gave rise to plants presumably lacked true roots, stems, leaves, and complex reproductive structures such as flowers.
对骈体的各种生殖行为进行了观察，并用孚尔根和改进的黑色素染色技术揭示了它们的细胞学细节。
Various reproductive behaviors of the doublet were observed and their cytological details were demonstrated by Fculgen stain and modified Nigrosin stain techniques.
深根水稻植株从深层土壤中吸收更多养分、保护植株在生殖生长阶段不倒伏。
Deep rooting of rice plant made easy to absorb more nutrients from deep soil layers, and protected the plant from lodging at reproductive stage.
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