A unicellular organism and a multicellular organism are different because, those that are unicellular consist of only a single cell. Those cells are very simple because they lack a nuclei and their DNA is not separated from the rest of the cell. Any injury or death of cell in unicellular organism leads to death's. life span is short and theirs cell is comparatively large.Multicellular organisms on the other hand, are made of many cells and are major complex.
Tweet. : This page is part of the section about the structure and function of different Tissue Types, which is related to the section about Histology and Cells (incl. structure of animal cells, cell division, mitosis, meiosis).
Our bodies have many different kinds of cells because we have many. different kinds of tissue. Tissues are large groups of cells all doing the same job. The different. kinds of tissues are classified into four groups, epithelial tissue, connective. tissue, nerve tissue, and muscle tissue. Within each group are many kinds of. tissue, but they are similar in the job they do. Epithelial tissueâs job is to.