Match Column I with Column II

	Column I		Column II
a.	Vessels	i.	Cells are living, with thin cellulosic cell walls
b.	Tracheids	ii.	Cells possess highly thickened walls with narrow or obliterated central lumen
c.	Xylem fibres	iii.	Individual members are inter-connected through perforations in their common walls
d.	Xylem parenchyma	iv.	Elongated tube-like cells with thick, lignified walls and tapering ends

	a	b	c	d
1.	iv	iii	ii	i
2.	iii	iv	ii	i
3.	ii	iv	iii	i
4.	iv	ii	iii	i

• A

  1

• B

  2

• C

  3

• D

  4