What's In Your Water?

Nicolette Lowery Period 1

The Kingdom Protista and Protozoans

The Kingdom Protista is full of all sorts of diversity due to anything that isn't an animal, plant, or fungi is put in this Kingdom. There are 4 groups of Protista, single celled animal protists, single celled plant-like protists, multicellular plant-like protists, and fungus-like protists. In these groups there is also sub groups, but they all have characteristics in common to unify them as one kingdom. These characteristics are they are mostly unicellular (some multicellular, all are eukaryotic, most live in water, and can be autotrophic or heterotrophic.

The prefix "pro" means first and "zoa" means animals so it is no surprise that the first group of organisms that contained animal- like characteristics, like being heterotrophic and turning food into energy, are called Protozoans. Although they are animal-like, they are unicellular and reproduce asexually, mainly through binary fission. They are mainly aerobic eukaryotes, and live in many various habitats. The subgroups of Protozoans are Sarcodines (amoebea-like), Mastigotes ( have flagella), Sarcomastigotes, and Ciliates (have cilia).

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Water Flea

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Water Beetle

Euglena 374851


Rotifer 374851


Ciliates Paramecium

Ciliates Paramecium


The most common organism I found in my samples of water was a rotifer. This was because most of the water we inspected was from turtle cages and rotifers cling to aquatic plants, such as mosses found in turtle cages. It was hard to take a picture and identify Protists because I wasn't sure what the exact characteristics visually were and there were many other things surrounding it . Also they are very small so you must magnify it extremely and be able to know what it is. I was fascinated by the vorticella. They were very thin and found in a clusters, using their cilia to move. The euglena, as seen in the video, are motile and use their flagella to move. The flagella almost act as propellers on a helicopter and move the euglena fairly quickly. A water flea is a herbivore as a niche in a pond ecosystem. It eats plants, algae, and organisms weaker and smaller than it.
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Food Web