By: Blake Armstrong

Information: Any one celled organism that is not a plant an animal, or fungi. If the organism does not classify under these kingdoms they throw that organism in the Protista Kingdom. Examples of this would be Amoeba's, parameciums, or euglena's. All of the Protista are eukaryotic and they could be unicellular or multicelluar.

Protozoans are usually unicellular and heterotrophic, meaning they can't make their own food. They posses a nucleus, which controls the cell, and lives in aquatic environments. Examples of protozoans would be Plasmodium, babesia, or cryptosporidium.

The photo pictured above is called a mayfly nymph.


1. Mayfly Nymphs are usually herbivores feeding on algae and other plant matter.
2. Adult mayfly nymphs usually live up to only a few hours.
3. Size ranges from 6-25 mm.
4. Adult mayfly nymph's do not feed their whole adult life.

The photo pictured above is called a Spirostomum. (Don't ask me to pronounce it.)


1. Found in both fresh and salt water.
2. One of the largest ciliates.
3. The organism can contract its body to 1/4 of its length.
4. Feeds on Bacteria.

The photo pictured above is called a Diatom.


1. 2 types of Diatoms: Centrales and Pennales
2. Contribute enormous amounts of oxygen.
3. They can live out of the water, because they can survive a long drought.
4. Richard B. Hoover srinkled water on some diatoms that were 150 years old and dead, the diatom was revived after he poured only a little bit of water!

This is a photo of a Dileptus.


1. Very aggressive predator.
2. It stings its victims with their toxic bearing needle.
3. If the proboscis(needle) is lost when they're feeding, it regenerates before their next feeding.
4. Found in fresh water and salt water

The photo pictured above is called a Chilodonella.


1. Contains millions of somatic cells.
2. Responsible for the disease called Chilodonelloza, affects the gills of freshwater fish.
3. The disease is a big problem for rainbow trout in streams.
4. Most dangerous skin parasite there is.

This photo above is a picture of a Paranema.


1. Very active predators and scavengers.
2. They can expand to eat larger organisms
3. Close relative of a Euglena.
4.They sometimes hunt in packs and tear apart the organism.

Here is my food web as it starts off with the producer (green algae), then to the primary consumer (mayfly nymph), then it goes on to the secondary consumer (freshwater drum), then to the tertiary consumer (smallmouth bass).

Here is my 2nd food web as it starts off with the producer and works its way up to the tertiary consumer.

Lab Questions

  • 1. The most common organism that I found was the Deleptus. It had a long stretched out body that could extend back and forth to move around. The end of its tail sort of stuck to a place and its upper body moved around.
  • 2. Yes, it was hard to find an actual protist because they moved around so much and fast! Once you spot one you have to follow its path.
  • 3. The most interesting organism I found was the Mayfly Nymph. This is because while I was searching for something small and sufficient, but I found this huge insect rolling around the sides and it just caught my attention. It was also eating a little different than the rest of the organisms.
  • 4. The spirostomum I found moved around like a snake. It moved just as our notes said, spiraling forward dragging things around.
  • 5. A Diatom makes bubbles that looks like golden brown foam. They also float along the coastline and not just in a pond.

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