Plant Parts

PLANT PARTS

工厂部分

Which matters most? There are over 300,000 different kinds of plant- and they sometimes look VERY different from each other. Even if plants LOOK different, really they're not. For example, most plants grow flowers. Even if their flowers look completely different, nearly all flowering plants have the same bits. Even plants without flowers (non-flowering plants) have most of the same bits as their flowery cousins. So almost all plants have the same parts. But which is the most important? Let's ask them and find out...

哪个最重要？世界上有超过30万种不同的植物，有时它们看起来非常不同。 即使植物看起来不同，但实际上它们并不是。 例如，大多数植物都有花。 即使它们的花看起来完全不同，但几乎所有开花植物都有相同的部分。 即使没有花的植物（不开花的植物）也和它们有花的近亲有很多相同的部分。 所以几乎所有的植物都有相同的部分。 但哪个是最重要的呢？ 让我们问问他们，看看结果……

Seeds Where it all starts If seeds weren't here, there would hardly be any plants at all. How important is that? Let me explain... 1 Plants grow from a seed We're really patient. We can wait years before growing. 2 Seeds contain everything they need Even the tiniest seed contains everything that's needed to make a plant. The seed coat protects what is inside. The embryo will become roots, stems and leaves. The tiny food store fuels the seed's growth. 3 Water, warmth and light When we sense the right amount of water, warmth and nutrients, we seeds start to grow or germinate. Nine out of ten plants grow flowers. Most flowering plants grow from seeds. So without us seeds, most plants wouldn't exist!

一切从种子开始如果没有种子，就不会有植物了。 这有多重要？让我解释一下…… 植物由种子长成，我们真的很有耐心。 我们可以等上几年再成长。 种子包含了它们所需要的一切，即使是最小的种子也包含了长成一株植物所需要的一切。 种皮保护里面的东西。 胚胎将变成根、茎和叶。 这个小小的食物储存为种子的生长提供了能量。 水、温暖和光当我们感觉到适量的水、温暖和营养时，我们的种子就开始生长或发芽。 十种植物有九种会开花。 大多数开花植物都是由种子长成的。 所以如果没有我们这些种子，大多数植物就不会存在！

Roots The multitasking part I'd really rather not talk about myself. I prefer to stay in the background. Or completely underground, actually. But if you REALLY want to know... As soon as my seed germinated, I sent a radicle down into the soil. It sucked in water and nutrients. As the plant grew, I sent out lots of little roots (with the cute name of rootlets). Once the plant gets taller, I stop it toppling over because roots anchor the plant in the ground. I also sometimes store fuel for the plant to use later. If you like to eat carrots, for example, you can thank me: carrots are plant roots. Yes, actually, now I think about it... I suppose those jobs ARE quite important.

多任务处理的部分我真的不想谈论我自己。 我更喜欢待在幕后。 或者完全在地下。 但如果你真的想知道…… 我的种子一发芽，我就把一根根茎埋进土里。 它吸收水分和营养。 随着植物的生长，我发出了许多小根（有一个可爱的名字——小根）。 一旦植物长得高了，我就会阻止它倒下，因为根部会把植物固定在地面上。 我有时也会储存燃料以供植物稍后使用。 例如，如果你喜欢吃胡萝卜，你可以感谢我：胡萝卜是植物的根。 是的，事实上，现在我想起来了…… 我想这些工作是相当重要的。

Stems... Into the light Roots don't seem to think they're that important, but I KNOW I'm MOST important! As a seed grows roots, it also grows a stem. (Stems don't always look exactly like me, though.) The stem grows towards the light... until it is in sunshine. To survive, plants need some key things: water and nutrients, collected by roots light and a gas called carbon dioxide, collected by leaves. Without ME linking them together, the roots and leaves would be useless! Which makes me more important than them.

茎……根乐队似乎不认为自己有多重要，但我知道我是最重要的！种子长出了根，也长出了茎。 （不过，茎并不总是长得和我一模一样。）茎向光的方向生长…… 直到阳光普照。为了生存，植物需要一些关键的东西：由根收集的水和营养物质——光，以及由叶子收集的一种叫做二氧化碳的气体。 没有我把它们连接在一起，根和叶将是无用的！所以我比他们更重要。

...and trunks The plant superhighway Tree trunks like me are actually giant, strong, woody stems. We are the biggest, best and most important of all. The tallest stems belong to my cousins, the coastal redwood trees. Their trunks can grow over 100 m tall. Trunks are a plant superhighway. They carry all kinds of important materials back and forth between the roots, branches and leaves. The trunk acts like a giant drinking straw, carrying water and nutrients from the roots to the leaves. Food from the leaves also travels along the trunk superhighway, to wherever it is needed. So we hold plants together, stop them being blown over, connect the roots and leaves, and move important materials around. No WONDER were the most important.

…像我这样的树干实际上是巨大而强壮的木质茎。 我们是最大、最好、最重要的。 最高的树干属于我的近亲，海岸红木。 它们的树干可以长到100多米高。 树干是植物的高速公路。 它们在根、枝和叶之间来回运送各种重要的物质。 树干就像一根巨大的吸管，把水和营养物质从根部输送到叶子上。 树叶中的食物也会沿着树干高速公路运送到任何需要的地方。 所以我们把植物固定在一起，防止它们被风吹走，连接根和叶，并移动重要的材料。 难怪它们是最重要的。