Simple tissueComplex tissueThese tissues consist of only one type of cellsThese tissues are made up of more than one type of cells.The cells are more or less similar inDifferent types of cells perform different functions.structure and perform similar functions For example, in the xylem tissue, tracheids help in water transport, whereas parenchyma stores food.Three types of simple tissues in plants areTwo types of complex permanent tissuesparenchyma, collenchyma, and sclerenchyma.in plants are xylem and phloem.