Botany-Fungi

Satisfactory Essays
Topics: Algae, Eukaryote
THALLUS ORGANIZATION

Unicellular Habit
Motile form-with flagella
Ex.Euglena
Non-motile form-w/o flagella
Ex.Gloeocapsa

Colonial Habit
Indeterminate- unlimited aggregates of cell division
Determinate-aka Coenobium, division is at a fixed rate

Filamentous Habit
Simple unbranched –cells are capable of cell division, growth,and reproduction
Branched-cell division and growth are restricted to the end cells (Cladophora). Growth due to cell division of meristem is called Trichothallic growth (Ectocarpus).
Heterotrichous-highly developed. Consist of prostate and erect system of branched filaments.
Ex. Ectocarpus
Siphoneous Habit
Coenocytic and lack septa. Septa formed during formation of reproductive organs.
Ex. Vaucheria

Pseudoparenchymatous and Parenchymatous Habit

Pseudoparenchymatous thalli-derived from juxtaposition of branch system of single axial thread
Parenchymatous habit-derived from filamentous one as a result of cell division taking place in more than one plane

Phycology –study of algea
Algae Characteristics
Thallophytes
Lack protective jacket of sterile cells
Lack vascular tissues
Lack embryo life stage
Gametangia-gametes housed in specialized containers
Flagella
Acronematic
Stichonematic
Pantonematic-3 or more rows, w/mastigonemes
Habitat-ubiquitous
Algal Zonation-related to algal pigmentation
Maintenance culture-algae in containers
Enrichment culture-specialized media for faster propagation
Unialgal culture-only 1 species of algae present though other microorganisms inside
Axenic algal culture-single algal species only
Clonal culture-populations only from single individual

Photoautotropic-grow in inorganic molecules with presence of light
Photoauxotropic-grow, needed vitamins
Heterotropic-not synthesize in inorganic compounds, needs some carbon compounds
Phagotropic-digest solid partices

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