On the ventro lateral surface of paramecium is a wide and a oblique groove called oral groove. All forms of life need to take in nutrition to survive, even single-celled protozoans.
Belonging to an overall grouping called Paramecium, these tiny organisms (make a dot with a pencil point and you’ve about covered their size) have no legs and arms to run around and grab food. So, they rely on hundreds of little hairlike structures (cilia) to move them toward their favorite diet – a healthy serving of bacteria.
The cilia, which stick out from the Paramecium’s outer coat of firm protein, known as the pellicle, don’t settle for just locomotion in their job descriptions. The cytopharynx opens obliquely into a small gulate.