The answer is Antonie van Leeuwenhoek.
According to research, cilia were first observed by Leeuwenhoek around 1674–5. He noted their motility, which is the ability to move independently. This early observation led to the recognition of cilia as one of the oldest known organelles.
Key Facts About Cilia and Their Discovery:
- Early Discovery: Leeuwenhoek's early microscope allowed him to see the movement of these tiny structures.
- Motility: The movement of cilia is what first drew attention to them.
- Old Organelles: Cilia are recognized as among the most ancient known organelles in cells.
To summarise, Anton van Leeuwenhoek is credited with the discovery of cilia due to his observations of their movement, classifying them among the oldest organelles known.