Multiple Choice Quiz

1		Most primary pit fields found in vascular cambium are found:
			A)	on transverse walls.
			B)	after secondary wall formation.
			C)	on radial walls.
			D)	on tangential walls.
			E)	on ray initials.
2		In order to give rise to another vascular cambium cell, it's division must occur:
			A)	along a periclinal axis.
			B)	in a transverse plane.
			C)	through the establishment of a tangential wall.
			D)	that establishes new cells in the radial axis.
			E)	with a cell plate in the radial axis.
3		Theoretically, the vascular cambium is comprised of a layer of how many cells?
			A)	One
			B)	Three
			C)	Five
			D)	Seven
			E)	More than eight
4		Rays:
			A)	continue through the vascular cambium into both secondary phloem and secondary xylem.
			B)	extend only into the secondary xylem.
			C)	extend only into the secondary phloem.
			D)	are only found in primary growth.
			E)	are formed through division in the tangential axis.
5		Interfascicular cambium is formed:
			A)	by the fascicular cambium.
			B)	deep in the pith.
			C)	only in monocots.
			D)	by differentiation and division of parenchyma cells.
			E)	from active dividing primary phloem cells.
6		Cells produced by the vascular cambium towards the axial direction are destined to become:
			A)	meristematic.
			B)	phloem.
			C)	xylem.
			D)	pith.
			E)	additional cambium.
			F)	epidermis.
7		Which is not produced by fusiform initials?
			A)	Fibers.
			B)	Tracheids.
			C)	Rays.
			D)	Companion cells.
			E)	Axial parenchyma.
8		What is lacking in the walls of vascular cambium cells?
			A)	Cellulose
			B)	Pectins
			C)	Water
			D)	Lignin
			E)	Hemicellulose
9		Uniseriate rays are characteristic of:
			A)	ferns.
			B)	gymnosperms.
			C)	dicots.
			D)	monocots.
			E)	all angiosperms.
10		Vascular cambium may be storied.
			A)	True
			B)	False