During differentiation, the cells undergo few to major structural changes in their
a)	Cell wall	b)	Protoplasm	c)	Both (a) and (b)	d)	Cytoplasm

(c)

During differentiation, cells undergoes few to major structural changes both in their cell wall and protoplasm. For example, to form tracheary elements, the cells would loose their protoplasm. They also develop a very strong, elastic, lignocellulosic secondary cell walls to carry water to long distances even under extreme tension