Protozoa
Protozoa are microscopic, single-celled organisms that occur in a variety of environments, from freshwater to marine habitats and even in soil. They belong to the kingdom Protista and are known for their diversity in form, size, and lifestyle.
Types of Protozoa:
There are different groups of protozoa that differ in their characteristics and lifestyles:
- Amoebas: These protozoa move by means of pseudopodia that they form from their cell body. They are often found in freshwater and feed through phagocytosis.
- Flagellates: These organisms have one or more flagella that help them move. Some flagellates are parasitic and can cause diseases in humans.
- Ciliates: These protozoa are covered with many small hairs, called cilia, which allow them precise movement. They are commonly found in aquatic environments.
- Sporozoans: This group includes parasitic protozoa that often have a complex life cycle. A well-known example is the causative agent of malaria.
Protozoa play an important role in the ecosystem. They are not only part of the food chain but also contribute to the decomposition of organic matter. Some protozoa are beneficial to humans, while others can cause diseases.