In addition to the Spirogyra and Cladophora , study live specimens AND prepared slides of two other filamentous genera, Oedogonium and Ulothrix . Please refer to your text for additional information about why scientists support this hypothesis. Also, refer to your text for information regarding the argument that the ancestral link to land plants might be a green alga called Coleochaete . Read the information about the colonial green algae, Volvox . Skip the Brown and Red Algae sections.
Diatomaceous earth is used in scouring powders and other abrasives.
The two shapes of diatoms help to classify them in the taxonomic hierarchy. Environmental conditions determine which mode of nutrition they use. In addition, a procedure should include a list of specimens examined and equipment used. 1. jars of diatomaceous earth 2. slide of pennate and centric diatom shapes 3. That is a total of 12 pictures to be organized taxonomically.