PhycoLab - PreLims

• Algae - autotrophic organisms composed of the cyanobacteria and the eukaryotic algae
• All algae can perform oxygenic photosynthesis using chlorophyll a
• The genus Anabaena, falls under the phylum Cyanophyta
• The genus Oscillatoria, falls under the phylum Cyanophyta
• The genus Chlorella, falls under the phylum Chlorophyta
• The genus Scenedesmus, falls under the phylum Chlorophyta
• The genus Phacus, falls under the phylum Euglenophyta
• The genus Tribonema, falls under the phylum Xanthophyta
• The genus Pyrodinium, falls under the phylum Dinophyta
• The genus Sargassum, falls under the phylum Phaeophyta
• Coenobium - number of cells in a colony is fixed
• This organism is an Ulothrix

  
• Akinete - a thick-walled dormant cell from the enlargement of a vegetative cell, serving as a survival structure in response to environmental changes
• Heterocyst - it is a differentiated cell that carries out nitrogen fixation
• Identify the parts

  A) Akinete

  B) Heterocyst

  
• Pseudofilament - arrangement of algae where they appear connected end-to-end but are not
• Pseudoparenchymatous - closely appressed branches of uniseriate or multiseriate filaments

  
• Parenchymatous - true tissues with single or many layers. Forming flat sheets or blade
• Reticulate - net-like arrangement of chloroplast
• Parietal - chloroplast arrangement where it's flushed against the wall
• Volvox sp.

  
• Pediastrum sp.

  
• Oedogonium sp.

  
• Chlamydomonas sp.

  
• Identify

  A) Heterotrichous

  B) Pseudoparenchymatous

  C) Coenocytic

  
• Frustule - cell walls of diatoms which are made of opaline silica and contain many fine pores
• Frustule - serve as channels for nutrient intake and metabolite exudation
• Chlorella sp.

  
• Closterium sp.

  
• Cosmarium sp.

  
• Cladophora sp.

  
• Spirogyra sp.

  
• Spirulina sp.

  
• Gloeocapsa sp.

  
• Chlamydomonas r.

  
• Anabaena sp.

  
• Chaetophora sp.

  
• Nostoc sp.

  
• Euglena sp.

  
• Single cell isolation - most efficient method of algal isolation