根叶(根叶) (1).植物的根与叶。南朝 梁 江淹 《莲花赋》:“若其华实各名,根叶异辞,既号芙蕖,亦曰泽芝。” (2).喻事事物的各个方面。南朝 梁 刘勰 《文心雕龙·体性》:“文辞根叶,苑囿其中矣。”
蛇根叶属 Ophiorrhiziphyllon Kurz ; Ophiorrhiziphyllon
根叶藻科 Rhizophyllidaceae
大根叶 leaf of radish
外包枞树形叶根叶片 fir-tree straddle root blade ; blade with external fir-tree root
外包形叶根叶片 blade with straddle root
阶梯形叶根叶片 blade with stepped root
落叶归根 Getting Home ; The root deciduous ; Falling Leaf Returns to Roots
根叶秋海棠 Begonia rhizocarpa Otto et Drude
外包倒T型叶根叶片 blade with external inverted-T-root
那么这些细胞是如何分化并形成像根、茎、叶和果实那样不同的结构的呢?
How then can these cells differentiate and form structures as different as roots, stems, leaves, and fruits?
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.
香料可以由肉桂等植物的树干、姜等的根、四叶草等的花蕾制成。
Spices can come from tree bark like cinnamon, plant roots like ginger, flower buds like cloves.
And so both of these lobes together constitute a pi bond.
上下两片叶一起组成了一根π键。
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