JAMB - Biology (1992 - No. 7)
The structure labelled X is used by the organism in the same way as man uses his?
oesophagus
trachea
stomach
intestine
Erläuterung
To gather food, the Paramecium makes movements with cilia to sweep prey organisms, along with some water, through the oral groove (vestibulum, or vestibule), and into the cell.
This organelle marked as x in the paramecium above serves similar function as oesophagus in man.