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在一些有机物较多的水坑、水沟和小河中,常能见到漂浮水面似泡沫的絮状物,它们就是低等水生植物——丝状绿藻。其中手感软而粘滑的是水棉,软而无粘滑感的是转板藻和双星藻。在显微镜下可见:水棉的叶绿体呈螺旋状,转板藻的叶绿体呈平板状,而在双星藻的一个细胞中则有两个星芒状叶绿体。另外,在一些水域中还能找到藻丝粗硬且有分枝的刚毛藻。这些丝状绿藻都有极强的产氧能力,除水棉不够理想外,都是做光合作用试验的良好材料。下面介绍几种实验方法。器皿和药品:1000毫升大烧杯、短颈漏斗
In some organic puddles, ditches and creek, often see floating like foam flocs, they are lower aquatic plants - filamentous green algae. Which feel soft and sticky slippery cotton, soft and non-slippery feeling is the turnip and algae. Microscopically, chloroplasts of cotton wool are spiral in shape, and the chloroplast of the plate is flat, while in the cells of the binary starches, there are two star-shaped chloroplasts. In addition, in some waters, algae filaments can also find hard and branched Chaetoceros. These filamentous green algae have a very strong ability to produce oxygen, except that cotton is not ideal, are good materials for photosynthesis experiments. Here are some experimental methods. Utensils and medicines: 1000 ml beaker, short neck funnel