While looking at microscope slides prepared from pond water sample, you find two different micro- organism. Since both organisms appear to have a nucleus, they are eukaryotic protists, but you are unsure whether each protist is an amoeba, a flagellate, a ciliate, a sporozoan, an algae, a euglenoid, or a fungus-like protist.
1- The first micro-organism appears to be heterotrophic, you notice that it moves through water by using a long whip- like structure.What is the most probable phylum of the micro organism? Is this protist considered plant-like, animal-like, or fungus-like? explain.
From samples, qualitative analysis can be made to find the species-composition of microflora. Phytoplanktons are mostly algae. Freshwater algae belong to classes, Chlorophyceae (greens), Cyanophyceae (blue-green), Xanthophyceae and Bacillariophyceae (diatoms). There may also be flagellates (Euglenophyta). The zooplanktons belong mainly to Protozoa, Rotifera, Cladocera, the Cyclopid and the Calanoid copepods. Quantitative estimations are made to determine the frequency, density and abundance. Number of organisms in unit area/volume are made. Phytoplanktons are counted by several methods. One common method is Lacky,s drop method, where a known volume of water which fits below a 22 mm cover glass is placed over a glass slide.