Translocation · 转运
| English | 中文 | Pinyin · 拼音 |
|---|---|---|
| translocation/trænsləʊˈkeɪʃn/ | 转运 | zhuǎn yùn |
| sources/ˈsɔːsɪz/ | 源 | yuán |
| sinks/sɪŋks/ | 库 | kù |
| tuber/ˈtjuːbə/ | 块茎 | kuài jīng |
Delivering the sugar
- Leaves make sugar by photosynthesis — but the whole plant needs it.
- Moving that sugar to where it's needed is translocation 转运.
输送糖
- 叶通过光合作用制造糖——但整棵植物都需要它。
- 把那个糖移到需要它的地方是转运(translocation)。
Translocation is the transport of: · 转运是以下哪种的运输:
Translocation moves sugars in the phloem. · 转运在韧皮部中移动糖。
Translocation takes place in the ______. · 转运发生在______中。
Phloem carries sugars; xylem carries water. · 韧皮部运糖;木质部运水。
What translocation is
- Translocation is the transport of sugars (and amino acids) in the phloem.
- It moves food from sources 源 (where it's made or stored) to sinks 库 (where it's used).
Translocation: the phloem carries sugars from a source (leaf) to a sink (root or fruit)
转运是什么
- 转运是糖(和氨基酸)在韧皮部中的运输。
- 它把食物从源(sources,制造或储存它的地方)移到库(sinks,使用它的地方)。
韧皮部运输:把糖从源(叶)运到库(根或果实)
Translocation in the phloem · 韧皮部中的转运
Phloem carries dissolved sugars from where they are made (the source) to where they are used or stored (the sink). · 韧皮部把溶解的糖从它们被制造的地方(源)运到它们被使用或储存的地方(库)。
A "source" in translocation is a part that: · 转运中的一个"源"是这样一个部分,它:
Sources supply sugar; sinks use or store it. · 源供应糖;库使用或储存它。
Which is acting as a sink? · 哪个正充当一个库?
A growing fruit uses sugar, so it is a sink. · 一个生长的果实使用糖,所以它是一个库。
Sources and sinks
- A source makes or releases sugar (e.g. a leaf in summer, a storage root in spring).
- A sink uses or stores sugar (e.g. growing shoots, fruits, roots).
源和库
- 一个源制造或释放糖(例如夏天的一片叶,春天的一个储存根)。
- 一个库使用或储存糖(例如生长的嫩枝、果实、根)。
Phloem can carry sugar both up and down the plant, depending on need. · 韧皮部能向上和向下两个方向把糖运到植物,取决于需要。
Direction depends on where the sources and sinks are. · 方向取决于源和库在哪里。
Why both directions
- Because sources and sinks change, phloem carries sugar up or down as needed.
- In summer a leaf is a source; a potato tuber 块茎 is a sink (storing starch).
Worked example. In spring, a potato's stored starch becomes a source, sending sugar up to the growing shoots (sinks). In summer, the leaves are sources sending sugar down to refill the tuber.
为什么两个方向
- 因为源和库会改变,韧皮部按需要把糖向上或向下运。
- 在夏天一片叶是一个源;一个马铃薯块茎是一个库(储存淀粉)。
例题。 在春天,一个马铃薯储存的淀粉变成一个源,把糖向上送到生长的嫩枝(库)。在夏天,叶是源,把糖向下送以重新填满块茎。
You've got it
- translocation = transport of sugars in the phloem
- it moves food from sources (made/stored) to sinks (used/stored)
- direction changes with the season — phloem carries sugar either way
你掌握了
- 转运 = 糖在韧皮部中的运输
- 它把食物从源(制造/储存)移到库(使用/储存)
- 方向随季节改变——韧皮部把糖任一方向运