Differences Between Paramecium Vs Euglena

Last Updated on March 19, 2022 by QCity Editorial Stuff

Euglena is a single-celled organism that is found in freshwater environments, and Paramecium is found in saltwater environments. In addition to their different locations, they have different features as well. Euglena has a nucleus, but no mitochondria or chloroplasts. Paramecium does not have a nucleus or chloroplasts either, but they have mitochondria that produce energy for the cell through aerobic respiration. They also both reproduce differently – Euglena reproduces by binary fission where one cell divides into two cells and if there is overcrowding then it will release its cytoplasm from the old cell to make room for the new one; Paramecium reproduces sexually with an exchange of cellular material.

Paramecium and Euglena are both single-celled organisms that can be found in water. However, there are some distinct differences between these two types of cells. Paramecium is a prokaryote, while Euglena is a eukaryote. This means that Paramecium does not have a true nucleus, while Euglena does. Additionally, Euglena can photosynthesize, which allows it to produce its food. Paramecium cannot do this and must rely on other sources of food to survive. Finally, Euglena can move by using flagella, while Paramecium cannot. Overall, these differences highlight the major distinctions between these two types of cells.

Comparison between Paramecium and Euglena

Parameters of ComparisonParameciumEuglena
SystemParamecium is a single-celled organism with cilia and flagellaEuglena is a type of algae that has chloroplasts
FoundParamecium can be found in freshwater or saltwatereuglena only lives in freshwater
MouthA paramecium’s mouth surrounds the food it eatsa euglenas’ mouth extends outwards from its body to capture food
ContractileParamecium has a contractile vacuole that helps maintain water balance inside the celleuglenas does not have this organelle 
EnergyMore energyLight energy

What is Paramecium?

Paramecium is a unicellular organism that lives in freshwater and saltwater. It moves by using its cilia to push itself along or through the water and can grow to about 1/2 mm long. Paramecium feeds on bacteria, algae, protozoa, and small pieces of organic matter found in the water it inhabits. The genus name comes from the Greek word “para” meaning near or alongside and “mention” meaning small; so named because they are similar to other organisms then classified as Euglena (from the Latin word for clear). These tiny creatures were first observed by Anton van Leeuwenhoek in 1674 when he used his microscope to observe them under a sample of pond water.

Paramecium is one of the most studied types of protozoa. They are found in freshwater environments and they have a life cycle that consists of four stages: trophozoite, schizont, erythrocyte, and cyst. Paramecia reproduce sexually by conjugation which is when two paramecia join together to form an endosymbiotic relationship with each other. This blog post will talk about the different types of paramecium as well as how they can be found in freshwater environments around the world.

Differences Between Paramecium Vs Euglena

What is Euglena?

Euglena is a type of algae that can be found in both fresh and saltwater. It has a greenish color and can be up to 1 millimeter long. Euglena is a single-celled organism, and it can photosynthesize or consume organic matter. This makes it an important part of the aquatic food chain. Euglena also has some unique features, including the ability to move using flagella, as well as two chloroplasts that allow it to carry out photosynthesis. In addition, euglena can change shape to move more efficiently through the water. All of these features make euglena an interesting subject for research studies.

Euglena is a single-celled, photosynthetic protist that can be found in freshwater environments all over the world. It has a fascinating microcosm of life within it and is often used for educational purposes in biology classes. Euglena is an important part of the food web and can be eaten by certain animals. It also produces oxygen gas as a by-product of photosynthesis, making it important for maintaining healthy aquatic ecosystems. Despite its importance, there are many things scientists still don’t know about euglena. This makes it an exciting organism to study.

Differences Between Paramecium Vs Euglena

10 Differences Between Paramecium and Euglena

1. Paramecium is a single-celled organism and Euglena is a multi-celled organism.

2. Paramecium has one nucleus while Euglena can have multiple nuclei.

3. The cell wall of the Paramecium is thicker than that of a Euglena.

4. A Paramecium will move around with its cilia, while a Euglena uses flagella to propel itself forward.

5. An individual from the species, “Paramecia,” is found in water sources such as ponds or lakes whereas members of the species, “Euglenoids,” are found mostly in freshwater environments.

6. There are more than 10,000 different types of paramecia but only about 150 different types of euglenoids.

7. The food for the Paramecium is outside of their cells and they live in water, while the food for Euglena is inside of their cells and they live on land.

8. The shape of the Paramecium is more spherical than that of a Euglena which has a long tail-like structure called flagella.

9. A paramecium reproduces sexually by dividing into two daughter cells (mitosis) or it can reproduce without sex through binary fission; a euglenoid reproduces only through binary fission.

10. Both types use cilia to move but there are many differences in how they do so – for example, a euglenoid uses its flagellum to find prey by sensing chemicals released from potential victims while a paramecium uses its cilia to push itself towards light sources where it will feed off algae or other microscopic organisms present in the water around them.

Interesting Statistics or Facts of Paramecium

1. Paramecium is a type of single-cell organism.

2. It has a nucleus and a cell wall, but not mitochondria or chloroplasts.

3. These organisms are found in freshwater.

4. The average lifespan of these organisms is about one day.

5. They reproduce through binary fission, which means the cells split into two identical daughter cells that may be able to survive without each other if they happen to become separated from one another. 

6. There are many different types of paramecia including parasitic ones that live on the gills of fish and cause diseases like whirling disease in trout populations.

Interesting Statistics or Facts of Euglena

1. Euglena is a single-celled organism that can produce its food through photosynthesis.

2. It is a major producer of oxygen in the world’s oceans, and can live without sunlight.

3. The average length of a Euglena ranges from 2 to 10 micrometers.

4. In 1882, Euglene was first observed by Ernst Haeckel.

5. A type of bioluminescence known as “Euglenoluminescence” occurs when Euglenae are disturbed or agitated.

6. There are over 1,000 species of Euglena with different shapes and sizes.


Paramecia are single-celled organisms that move in a straight line while euglena is multicellular and moves to utilize cilia. Euglena has chloroplasts which allow it to photosynthesize for food, whereas paramecium does not have these organelles. Paramecia reproduce sexually while euglena reproduces both sexually and anaerobically through binary fission.

Paramecium and Euglena are both unicellular organisms that belong to the phylum Ciliophora. When observing them under a microscope, they may seem very similar; however, there are some fundamental differences between these two species of protozoa. The purpose of this blog post is to explore those key distinctions to provide an understanding of how different types of cilia can contribute to what we know about development or cell function as well as other features such as reproduction and motility. Some examples include examining their locomotion patterns (ciliary beat frequency), feeding habits (foraging behavior), and life cycles (sexual/asexual). 


Resource 01: https://www.livescience.com/55178-paramecium.html
Resource 02: https://www.britannica.com/science/Euglena

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