成体以浮游硅藻类为主要食物。
硅藻类的营养细胞是二倍体，它是由配子融合直接产生的。
In diatoms the vegetative cells are diploid, and are formed directly by the fusion of gametes.
上图就是旧金山海湾的一个浮游生物网内聚集的单细胞植物硅藻——这种藻类在世界各大海洋都广泛分布。
The single-celled diatoms below—the likes of which are found in oceans worldwide—were collected with a plankton net in San Francisco Bay.
“仅仅在印度就有2500种硅藻，”Balasubramanian说，他正在写关于这些藻类的博士论文。
"There are 2,500 species of diatoms in India alone," says Balasubramanian, who is writing his doctoral thesis on these algae.
一些藻类的细胞壁的化学成分有所不同，例如硅藻属的细胞壁含有硅化物，石灰质藻类的细胞壁含有钙。
The walls of some algae differ, e. g. the silica boxes enclosing diatoms, and the calcareous layer on the cell walls of calcareous algae.
共发现藻类20种，分别归蓝藻门、绿藻门和硅藻门。
There were 20 species to be identified belonging to 16 genera, 3 phyla including Cyanophyta, Chlorophyta and Bacillatiophyta.
共发现藻类20种，分别归蓝藻门、绿藻门和硅藻门。
There were 20 species to be identified belonging to 16 genera, 3 phyla including Cyanophyta, Chlorophyta and Bacillatiophyta.
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