Answers

2015-06-12T10:00:31+05:30
Tissues may be defined as the group of similar cells present together to form an important part of an organism to perform a particular function. Examples are nervous tissues, connective tissues and muscular tissues. 
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2015-06-12T10:04:33+05:30
Tissue: A group or layer of cells that perform specific functions. For example, muscle tissue , connective tissue and nervous tissue
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Tissue is a cellular organizational level intermediate between cells and a complete organ eg : connective tissue, muscle tissue, epithelial tissue