| environ. |
chlorophyll A green pigment, present in algae and higher plants, that absorbs light energy and thus plays a vital role in photosynthesis. Except in Cyanophyta (blue-green algae), chlorophyll is confined to chloroplasts. There are several types of chlorophyll, but all contain magnesium and iron. Some plants (e.g., brown algae, red algae, copper beech trees) contain additional pigments that masks the green of their chlorophyll (一种绿色色素、存在于海藻和高等植物中，吸收光能因此在光合作用中起着重要作用。除了蓝藻门(蓝绿色藻类)，叶绿素限于叶绿体中。叶绿素有几种类型，但是所有叶绿素都包含镁和铁元素。一些植物(例如，褐色海藻、红色海藻、铜山毛榉树)包含附加的色素，这些附加的色素掩盖了绿色素的绿色。) |
