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One of the most puzzling questions in biology is how multi-cellularity arose. Ex

ID: 21487 • Letter: O

Question

One of the most puzzling questions in biology is how multi-cellularity arose. Explain the conditions under which having a body with more than one cell would have been adaptive. What kinds of problems do having larger and/or more cells present to an organism? What are some strategies used by these organisms to deal with these problems? Finally, a number of eukaryote groups are represented by colonial and multicellular members. Using your knowledge of these two categories, what criteria would you use to distinguish between an organism that is colonial and one that is

Explanation / Answer

Unicellular has one cell only, multicellular has multiple. Unicellular are usually smaller, less specialized, and prokaryotic; multicellular are usually larger, more specialized, and eukaroyotic 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. Their cells do have a nuclei and have their DNA separated from the rest of the cell.Theirs life span is long. They have better adaptability for survival.theirs cell size is smaller .