What is tissue? Define in about 40 words
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Answer:
In Multicellular animals, a group of similar cells along with intracellular substances perform a specific function.Such an organization is called tissue.
Cells of multicellular organisms show division of labor.
Various metabolic activities are performed by different group of cells. Each such group of cells forms a tissue. A group of similar cells which work together to achieve a particular function and have common origin. blood, phloem and muscles are examples of tissues.
In multicellular organisms there are millions of cells. Most of these are specialised to carry out a few functions. Each specialised function is taken up by a different group of cells or tissues. Since these cells of a tissue carry out only a particular function, they do it very efficiently.