,HIERARCHY
,DIVISION OF LABOUR
▪ The separation of a work process into a number of task
with each task perform by a separate person or group of
persons.
▪ - In unicellular organism a single cell performs all basic
functions. For example - in amoeba, a single cell carries
out movement, in take of food gaseous exchange and
excretion.
▪ - In multicellular organisms there are millions of cells.
Each specialised function is taken a by different group of
cells since these cells carry out only a particular
function they do it very efficiently.
, WHAT IS TISSUE?
▪ A group of cells that are similar in a structure and all work together to
achieve a particular function forms a tissue.
,DIVISION OF LABOUR
▪ The separation of a work process into a number of task
with each task perform by a separate person or group of
persons.
▪ - In unicellular organism a single cell performs all basic
functions. For example - in amoeba, a single cell carries
out movement, in take of food gaseous exchange and
excretion.
▪ - In multicellular organisms there are millions of cells.
Each specialised function is taken a by different group of
cells since these cells carry out only a particular
function they do it very efficiently.
, WHAT IS TISSUE?
▪ A group of cells that are similar in a structure and all work together to
achieve a particular function forms a tissue.
