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Why is cell specialization important in multicellular organisms?
Cell specializations make it possible to express fewer genes in individual cells of multicellular organisms, thus protecting genes from the damage of mutagens.
What does cell specialization in a multicellular organism mean?
Cellular differentiation is the process by which a less specialized cell becomes a more specialized cell type. Differentiation occurs numerous times during the development of a multicellular organism as the organism changes from a simple zygote to a complex system of tissues and cell types.
How cells of multicellular organisms are Specialised for particular functions?
In order for a cell to become specialised, a process called Differentiation occurs, where unspecialised cells (called Stem Cells) produce cells with specialised structures.
What is a benefit to being multicellular?
Being multicellular allows an organism to develop a higher level of adaptation to its surroundings. When talking about evolution, this is where multicellular organisms have the advantage as the many types of cells contained in a complex cellular organism enable it to adapt, change and survive.
How does cell specialization benefit multicellular organisms?
Perhaps the most important benefit is that specialization reduces the number and type of messages to which the cell can respond. There are thousands of different types of molecular messages active in a complex multicellular organism. Each cell responds to just a small subset.
Why do unicellular organisms need to be so small?
The structure known as the cell nucleus is completely absent in these prokaryotes, and this leads to their inability to handle their surface area to volume ratios. Owing to this reason, their sizes are very small. Most unicellular organisms are so small and microscopic in nature, that they are almost invisible to the naked human eyes.
Why is meiosis necessary for multicellular organisms?
Other multi-cellular organisms like humans need a special process of cell division, called Meiosis, to create sperms and eggs for reproduction . [In this figure] The importance of cell division in reproduction in multi-cellular organisms. Primitive animals, such as starfish, hydra, or flatworm reproduce themselves by regular cell division.
Why does a multicellular organism usually have a longer life?
The life span of single celled organisms is short (due to the load of work they perform) while the life span of multicellular organism cells is longer given that different cells carry out specific functions . While all consist of more than one cell, they start out as a single cell.