蒸类 1、绿藻门 形态多样,单细胞 群体、丝状体和叶状 100pm 体 叶绿素与高等植物 样 储藏的营养物质是淀 团藻 粉和油类 Fu2614 Colonial and multicellular green algae, fai Species of 淡水种粪90%,海产“ aed celis enbedded an common 种类约占10% 石莼属 cones teen here w eventually release the smal 代表:石莼、水绵、 green and red"'daughter coionies within them(LM 1Species of Bryopsis form branching aments that lack aoss walls and, thus, are multinucleate(LM).(c) (团藻、小球藻) va, ar sea lettuce is a te atively complex, eo ble rare alga with a thallus (body) diferentiated into leaf. p blades and a rootlike hold ant that anchors the tha 进化意义 naganst turbulent tides and waves (o) Spirogyra is a corrugating filamentous aiga. Cells of a mating pair ae ed by conjugation tubes, through wthich amoeboid ttes will migrate srom the male and unie with 水绵属
一、藻类 1、绿藻门 形态多样，单细胞、 群体、丝状体和叶状 体； 叶绿素与高等植物一 样 储藏的营养物质是淀 粉和油类 淡水种类90％，海产 种类约占10 ％ 代表：石莼、水绵、 （团藻、小球藻） 进化意义 团藻 水绵属 石莼属
石莼生活史中 Mature 的世代交替 MPE MEIOSIS )2y80 同型世代交替 FERTILIZATION Zoospores SEXUAL Isomorphic alternation REPRODUCTION of generations MITOST Gametophytes Diploid Haplo Figure 26.16 Alternation of generations in the life cycle of U/va. The haploid, sexual generation (gametophyte) produces the diploid, asexual generation(sporophyte), and vice versa. In this case, the two generations are isomorphic. or identical in morphology
石莼生活史中 的世代交替 同型世代交替 Isomorphic alternation of generations
藻类 2、红藻门 Rhodophyta 主要生话在海水 大多是多细胞,丝状或片状体 绿素a叶绿素d和β胡萝卜素, 细胞含藻红素和少量藻蓝素 Fiqure 26 19 A red alga. Coralline algae contrbute to the great coral 储藏的营养物质为红藻淀粉 红 经济价值 代表:紫莱
第六节 植物界 一、藻类 2、红藻门 Rhodophyta 主要生活在海水 ▪ 大多是多细胞，丝状或片状体 ▪ 叶绿素a叶绿素d和β胡萝卜素, ▪ 细胞含藻红素和少量藻蓝素 ▪ 储藏的营养物质为红藻淀粉 ▪ 经济价值 ▪ 代表：紫菜 红 藻
Photosynthetic protists Brown algae are found along temperate-zone shorelines. They are the most complex algae. They are multicellular and the larger species are known as seaweeds or kelp. Seaweeds may also be members of the red alga
3、褐藻门 Phaeophyta 多数海产 最大的多细胞藻类 叶绿素a、少量叶绿素C,特殊的叶黄素 储藏的营养物质为褐藻淀粉、甘露醇和油等 多数含碘量较高 代表:海帶
3、褐藻门 Phaeophyta 多数海产 最大的多细胞藻类 叶绿素a 、少量叶绿素c，特殊的叶黄素 储藏的营养物质 为褐藻淀粉、甘露醇和油等 多数含碘量较高 代表：海带