Which organelle in paramecium is used for osmoregulation?

Explanation

Paramecium is a unicellular organism that lives in freshwater. This organism has a structure called the contractile vacuole that is used for osmoregulation. Osmoregulation is the process of regulating the concentration of water and ions in the cell. The contractile vacuole is a specialized organelle that collects excess water from the cytoplasm and expels it out of the cell. This helps to maintain the proper balance of water and ions in the cell. In the given options, option C, which is the contractile vacuole, is the correct answer to the question. Cilia are hair-like structures that are used for movement, the nucleus is the control center of the cell, the oral groove is used for feeding, and the pellicle is a protective covering. It is important to note that osmoregulation is a vital process for cells to maintain their shape and function properly. If the concentration of water and ions in the cell is not regulated, it can lead to cell damage and death.