An Introduction to the AlgaeHutchinson, 1967 - 189 pagine General classification of algae - Vegetative structure and methods of reproduction - Cyanophyta - Chlorophyta - Xanthophyta - Chrysophyta - Bacillariophyta - Pyrrophyta - EuglenophytaS_ |
Dall'interno del libro
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Pagina 45
... colony appear identical , and the colony moves by a somersaulting motion , so that the colony has no distinct anterior and posterior ends . All other genera being described have distinct anterior and posterior ends , and this can be ...
... colony appear identical , and the colony moves by a somersaulting motion , so that the colony has no distinct anterior and posterior ends . All other genera being described have distinct anterior and posterior ends , and this can be ...
Pagina 48
... colony is the wall of the original parent cell . An- other group , containing such genera as Golenkinia and Micractin- ium , also has colonies formed by failure of autospores to separate . However , in these genera the colonies are ...
... colony is the wall of the original parent cell . An- other group , containing such genera as Golenkinia and Micractin- ium , also has colonies formed by failure of autospores to separate . However , in these genera the colonies are ...
Pagina 95
... colonies is extremely variable . For example , Chrysosphaerella is a spherical colony with cells grouped in a mucilaginous envelope in which silicified scales are embedded ; long hollow needles radiate from the colony , each one arising ...
... colonies is extremely variable . For example , Chrysosphaerella is a spherical colony with cells grouped in a mucilaginous envelope in which silicified scales are embedded ; long hollow needles radiate from the colony , each one arising ...
Sommario
Acknowledgments | 6 |
Range of vegetative structure and methods | 20 |
Chlorophyceae | 37 |
Copyright | |
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acronematic algal amoeboid apical appears Asexual reproduction auxiliary cell Bangiophycidae biflagellate Biol blue-green algae branches carotenoids Caulerpales cell structure cell surface cell wall Chlorococcales Chlorophyceae chlorophyll chloroplast chromosomes Chrysophyta Cladophorales classification colony colourless consists Cryptophyta Cyanophyta cytoplasm daughter cells diatoms diploid discoid chloroplasts divide elaborate electron microscope elongated emphasised erect system Euglena euglenoids Euglenophyta evolution filamentous forms flagella flagellate flagellum Florideophycidae formation fusion gametes gametophyte genera genus germinate green algae haploid Haptophyceae heterocysts heterotrichous isogamous large number later layer life-history longitudinal MANTON membrane morphological motile mucilage multinucleate non-motile normally nuclear division nucleus observed occurs oogamous oogonium organisms palmelloid pantonematic parenchymatous Phaeophyceae photosynthetic pigments phyceae phyla plant plurilocular present produced protoplast pyrenoid Pyrrophyta Rhodophyta sexual process sexual reproduction specialised species sporangia spores sporophyte stage suggest swarmers Tetrasporales thallus tion transverse trichome unicellular forms unilocular usually valve variable Volvocales whereas Xanthophyceae zoospores zygote