一旦开始生长，这些植物似乎就不再具有暂停其茎叶新陈代谢的能力。
Once they start growing, such plants seem not to retain the ability to hit the pause button on metabolism in their stems or leaves.
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.
然而，一旦它们开始生长，这些植物似乎就无法阻止其茎或叶的新陈代谢的能力。
Yet once they start growing, such plants seem not to retain the ability to hit the pause button on metabolism in their stems or leaves.
此前研究人员曾报告称，虽然植物没有大脑，但它们的茎和叶发出的电信号还是触发了类似于意识的反应。
Though plants lack brains, the firing of electrical signals in their stems and leaves nonetheless triggered responses that hinted at consciousness, researchers previously reported.
把马齿苋想成是生菜的一个伟大的替代品：叶和茎是脆的、耐嚼、多汁，而且它们有淡淡的柠檬味。
Think of purslane as a great alternative to lettuce: the leaves and stems are crisp, chewy, succulent, and they have a mild lemony taste.
有毒的矿物质首先被根部吸收，然后转移到茎和叶上。
Toxic minerals would first be absorbed by roots but later relocated to the stem and leaves.
这种昆虫，也被称为番茄潜叶蛾，以果实为食，还会钻入植株的茎内移动来破坏农作物。
The insect, also known as the tomato leaf miner, devastates crops by feeding on fruits and digging into and moving through stalks.
倡导者们声称纤维素(组成植物的根、茎、叶和木材)如果能够被恰当处理，就能够成为玉米中所含的淀粉的替代物。
Boosters claimed that cellulose, from which the stalks, leaves and wood of plants are made, could if suitably treated become a substitute for the starch in corn.
它的茎、叶都含有挥发芳香油。
高峰期前，用促进茎、叶生长和延长有效光合作用时间的方法，能在生长后期提高块茎的产量和秋水仙碱的含量。
The yield of tuber and colchicine content could be increased by means of promoting the growth of stem and leaves and elongating the effective photosynthetic time before the peak appeared.
黑色鞋面上绣以多彩的花、茎、叶，鞋口以锯齿状布包边饰，后鞋帮用布作鞋拔，鞋拔上绣有图案，鞋底手工纳线而成。
Upper Black Shangxiu with colorful flowers, stems, leaves, cloth shoes, I saw to Bianshi, after the upper cloth to make shoes out, pull Shangxiu shoes with patterns, soles by hand line from satisfied.
蔬菜可以是根、茎、叶或者花。
茱萸是一种植物，果实可以吃，茎、叶都是药材。
Cornel is a kind of plant with edible fruit, while its stem and leaves have medicinal value.
不同的溶剂及配比、不同的提取时间对金丝桃蒽酮素的产率有着显著的影响，其在元宝草的根，茎，叶，果实中的含量也各不相同。
There is great effect on the yield of hypericin by the solvent, proportion of solvent and time, and the content in root, stem, leaf and fruit is different.
这周我们学习的是植物，我们学习了植物的各个部分：根，茎，叶和花朵。
This week we have been working on plants. We learned the part of the plant: roots, stems, leaves, and flowers.
以番茄为材料，采用分光光度法对其根、茎、叶、果实的原花色素含量进行测定研究，并对提取条件进行优化。
Using tomato plants as materials, the content of oligomeric proanthocyanidins in their roots, stems, leaves and fruit were determined by a spectrophotometer method.
目的通过预试验，研究马蹄莲根、茎、叶三个部位可能的化学成分，以寻找有效成分的主要存在部位。
Objective To explore the active constituents in different parts from the root, stem and leaf of Zantedeshia aethiopica by pre-experiment.
方法把珐菲亚幼苗在不同年份移栽实验田，对其根、茎、叶、花、果实的生长发育过程进行观察研究。
Methods The pfaffia seedlings were transplanted in fields in different years, and their roots, stems, leaves, flowers and fruits developmental growth process were observed.
土壤干旱胁迫明显提高了喜树幼苗根、茎、叶中的喜树碱含量。
But soil drought stress increases CPT concentration in the leaves, stems and roots of the seedlings.
目的建立测定藤三七不同部位包括珠芽、茎、叶、花中腺苷含量的方法，为该药材的质量控制提供依据。
Objective To obtain and develop an HPLC method for the determination of the content of adenosine in the bulbule, stem, leaf, flower of Boussingaultia gracilis Miers var.
荆芥株高、茎径变化动态，根、茎、叶、穗干重积累动态均呈不同特征的“S”形曲线。
The dry weights of root, stem, leaf and spike coubld be described as S curves either.
外植体根、茎、叶愈伤组织诱导的频率不同。
The frequency of callus induce was different on root, stem and leaves.
用原子吸收分光光度法分别测定了喷施氨基酸铜和喷施清水后，接种棉花黄萎病菌的感病棉株的根、茎、叶中铜元素的含量。
Copper in the root, stem and leaf of cotton which was infected by Verticillium wilt was sprayed with cupric complexes of glycine and water.
杂交水稻与其三系茎、叶解剖的比较有些区别。
There are some differences in stem and leaf structure between hybrid rice and its three lines.
烟草根、茎、叶各器官变化规律基本同全株一致。
The changing law of root, stem and leaf was consistent basically with the total plant.
烟草根、茎、叶中K素含量的变化趋势一致，在整个生育期内均呈下降趋势。
There was a dynamic change of K content in root, leave and stem, they were on the decline in the whole stage.
目的研究长白山珍珠梅茎、叶、花的化学成分。
ObjectiveTo study the chemical constituents of Sorbaria sorbifolia from Changbai Mountain.
目的研究长白山珍珠梅茎、叶、花的化学成分。
ObjectiveTo study the chemical constituents of Sorbaria sorbifolia from Changbai Mountain.
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