Photosynethically Available Radiation ( PAR ) is an important energy sources of photosynthesis for the green plants.

By means of photosynthesis, plants convert the radiant energy of the sun into chemical energy.

通过光合作用, 植物将太阳的辐射能转为化学能.

This process called photosynthesis sustains almost all life on Earth.

这个过程叫做光合作用,它使地球上几乎所有的生命得以维持.

Some of the carbon dioxide absorbed by plants during photosynthesis is radioactive.

植物在光合作用中吸收的一些二氧化碳具有放射性.

The high rate of nitrogen and phosphorus is unfavourable to the photosynthesis of the phytoplankton.

过高的氮磷比不利于浮游植物进行光合作用.

Eventually, photosynthesis arrived in the form ofcyanobacteria.

起初, 陆地上大多是岩石和冰,后来,随着植被的出现,才形成了今天的地球.

If it were not for photosynthesis, the world would starve to death.

要不是由于光合作用, 世人就要饿死.

An example for plastids are chloroplasts, in which photosynthesis occurs.

质体的一个例子是发生光合作用的叶绿体.

The second reason light is important to organisms is that it is essential for photosynthesis.

光对于生物很重要的第二个原因是它对于光合作用极其重要.

The leaf was allowed to photosynthesize in the presence of radiocarbon.

叶子被允许同放射性碳进行光合作用.

The plant can then reach the light faster and photosynthesize and synthesize more chlorophyll.

这种植物被置于光下后,可迅速的开始光合作用,合成大量叶绿素.

Leaf area is the best measure of the photosynthesizing capacity of the plant.

叶面积是测定植株光合能力的最好尺度.

Chloroplasts are the site of photosynthesis in plants and other photosynthesizing organisms.

叶绿体是植物和其它光合作用有机体发生光合作用的场所.

So the controlling factor of photosynthetic rate was non-stomatal limitation.

白玉兰光合速率控制因子为 非 气孔限制.

The photosynthetic unit then is a physiological unit of function defined by experiments with intact plants.

通过用整体植物作的试验,又把光合单位定义为生理学的功能单位.

Water stress promoted allocation of photosynthetic product to the seed.

因此,水分胁迫促进了光合产物向籽粒的调运.

In some plants photosynthetic products are stored in the form polyfructosans.

在有些植物中,光合作用产物是以多聚果糖的形式储藏.

The photosynthetic pigment in bacteria is bacteriochlorophyll.

细菌光合作用的色素是细菌叶绿素.

Scientists invented a mosquito-repellent device using mosquito's phototaxis.

利用蚊子的趋光性,专家发明了一种灭蚊器.

Water beetles can swim in water, fly in the air, and have strong phototaxis.

龙虱在水能游, 出水能飞, 并有很强的趋光性.

Leaves are always positively phototropic.

叶子总是正向光性的.