The jelly-like liquid filling the cell is known as cytoplasm. This substance plays a crucial role in the life of the cell.
Cytoplasm is a thick, gel-like material that exists between the cell membrane and the nucleus. It holds various organelles – specialized structures that perform distinct functions within the cell, such as the mitochondria, endoplasmic reticulum, and ribosomes. The cytoplasm is essential for cellular processes, providing a medium where biochemical reactions can take place and helping in the transport of materials around the cell. It also aids in maintaining the cell’s shape and structure.