feeding

Description:

Paramecium fed with dead bacteria stained red and with some indian ink added, such that food vacuoles form that are red and black in colour. These are normal sized food vacuoles (compare with the paramecia that have been fed with yeast cells). The mouth cilia form the dark band located near the middle of the cell. The macronucleus is anterior, a contractile vacuole with radiating collecting canals and expanded ampullae is evident in the back of the cell. The posterior end of the cell has a tuft of caudal cilia that are longer than the cilia over the rest of the body.