Divion Chlorophyta (incl. Charophyta)
二、Chlorachniophyta
1. Habit－warm marine; planktonic
2. Plant body－colonial
3. Pigmentation－chlotophyll a , b (bright green)
4. Cell wall－none
5. foodreserves－possibly β-1,3-glucan
6. flagella－only one in zoospore, whiplash 光滑的
三、Chlorophyta
Gr. chloro－green
Gr. phyta－plant
A. General characteristics:
1.Pigmentation (mostly like land plant)
Chlorophyll a, b
α-, β-, γ- carotenes
xanthophylls 葉黃素
2.food reserve (mostly like land plants)
starch－pyreniod 澱粉核(或蛋白核)
in chloroplast
center of formation of amylose sythetase 合成酵素
3.plant body structure
(1) motile unicellular→motile colonial
(2) nonmotile unicellular→nonmotile colonial
(3) filamentous (branched or nonbrandhed)
(4) membranous
(5) coenocytic多核的 and tubular
4.wide spread－7500 sp.
Air-borne
Soil
Water
5.flagella
apical in motile cell (1,2 or more)
6.reproduction
asexual rep. : Cell division
fragmentation
spore
sexual rep. : Isogamy
heterogamy (anisogamy, oogamy)
7. life cycle:
type1→zygotic meiosis (M, h)
type2→gametic meiosis (M, d)
type3→sporic meiosis (D, h+d)
8. Classification: 5 classes
Prasinophceae
Chlorophyceae
Ulvophyceae
Charophyceae 紅色得要背
Pleurastrophyceae
B. Representatives
→見講義
Test on next Monday:
十個名詞:
Rhodophyta 紅藻
Rhodophyceae 真紅藻綱
Bangiophycidae 頭髮菜亞綱
Porphyridium 紫球藻
Bangia 頭髮藻
Porphyra 紫菜
Florideophycidae 真紅藻亞綱
Nemalion 海索麵
Batrachospermum 串珠藻
Polysiphonia 多管藻
兩個物種life cycle:
The life cycle of Nemalion
The life cycle of Polysiphonia
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